ASTROSAT CZTI

Data Quality Report

Orbit 20230103_A12_042T01_9000005462_level2

Creation date: 2023-01-04T14:38:08.729036
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/AS1A12_042T01_9000005462cztM0_level2.fits modeM0/AS1A12_042T01_9000005462cztM0_level2_quad_clean.evt
Size (bytes)242,239,680331,375,680
Size231.0 MB 316.0 MB
Events in quadrant A1,589,7262,551,219
Events in quadrant B1,510,9802,560,334
Events in quadrant C1,548,1642,440,153
Events in quadrant D621,092429,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06120
B06120
C06120
D06120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690740
B0662010
C0637380
D02319430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A298834171.395442%
B298836422.148379%
C298831470.491918%
D298832457182.224007%

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 40809 29884 0 0 0.00% 0.00%
B 40809 29820 0 0 0.00% 0.00%
C 40809 29882 0 0 0.00% 0.00%
D 40809 29216 0 0 0.00% 0.00%

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 0 29 1303 8.52 415 389 107.3
A 9 19 1296 8.46 415 389 107.3
A 7 110 1229 7.83 415 389 107.3
B 2 9 1313 11.79 399 382 79.0
B 5 128 1052 8.48 399 382 79.0
B 2 8 1042 8.36 399 382 79.0
C 1 81 1341 8.99 409 383 106.6
C 3 202 1323 8.82 409 383 106.6
C 3 203 1279 8.41 409 383 106.6
D 6 67 460 6.07 177 161 49.2
D 1 3 457 6.01 177 161 49.2
D 7 3 451 5.89 177 161 49.2

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