ASTROSAT CZTI

Data Quality Report

Orbit 20230503_A12_093T02_9000005594_level2

Creation date: 2023-05-06T14:14:53.435475
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_093T02_9000005594cztM0_level2.fits modeM0/AS1A12_093T02_9000005594cztM0_level2_quad_clean.evt
Size (bytes)200,237,760206,948,160
Size191.0 MB 197.4 MB
Events in quadrant A1,236,0281,271,065
Events in quadrant B1,180,3981,280,117
Events in quadrant C1,192,8841,199,071
Events in quadrant D1,030,4401,091,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468410
B0429630
C0433140
D0544520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20690920.444659%
B20690310.149831%
C206901030.497825%
D206906553.165781%

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 33516 20691 0 0 0.00% 0.00%
B 33516 20690 0 0 0.00% 0.00%
C 33516 20689 0 0 0.00% 0.00%
D 33516 20688 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 9 19 1028 8.89 322 302 81.7
A 7 110 976 8.25 322 302 81.7
A 14 95 944 7.86 322 302 81.7
B 2 9 1004 11.22 311 297 63.0
B 3 17 815 8.22 311 297 63.0
B 3 80 813 8.19 311 297 63.0
C 1 80 970 8.2 315 295 82.3
C 1 81 967 8.17 315 295 82.3
C 3 202 915 7.53 315 295 82.3
D 7 3 797 6.69 294 269 79.0
D 6 38 741 5.98 294 269 79.0
D 4 160 738 5.94 294 269 79.0

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