ASTROSAT CZTI

Data Quality Report

Orbit 20220822_A11_030T02_9000005310_level2

Creation date: 2022-09-03T12:22:50.245173
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_030T02_9000005310cztM0_level2_bc.evt modeM0/AS1A11_030T02_9000005310cztM0_level2_quad_clean.evt
Size (bytes)6,432,491,5201,551,153,600
Size6.0 GB 1.4 GB
Events in quadrant A36,161,9999,849,584
Events in quadrant B34,222,12010,018,141
Events in quadrant C47,224,9469,686,368
Events in quadrant D68,593,9728,746,182

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02853010
B02913220
C03190520
D04002760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025920
B025920
C025920
D025920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04800
B04800
C04800
D04800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12665517191.357230%
B12665529772.350480%
C12665546143.642967%
D1266551467711.588173%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 174811 126600 251 251 0.14% 0.20%
B 174811 126655 159 159 0.09% 0.13%
C 174811 126658 1688 1688 0.97% 1.33%
D 174811 126654 8590 8590 4.91% 6.78%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 5197584 3655.48 6428 6326 1420.1
A 15 237 2602766 1828.31 6428 6326 1420.1
A 13 248 1386282 971.71 6428 6326 1420.1
B 5 172 3797136 2998.31 6464 6320 1264.3
B 0 190 1366028 1075.45 6464 6320 1264.3
B 0 213 1142827 898.91 6464 6320 1264.3
C 1 23 14390428 10091.71 6246 6197 1425.4
C 15 214 4943878 3464.19 6246 6197 1425.4
C 0 10 1703515 1190.81 6246 6197 1425.4
D 12 227 22287802 15324.51 6054 5866 1454.0
D 10 253 6548882 4499.99 6054 5866 1454.0
D 2 249 6179976 4246.28 6054 5866 1454.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter