ASTROSAT CZTI

Data Quality Report

Orbit 20210521_A10_053T15_9000004392_level2

Creation date: 2025-12-25T23:54:14.145409
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/AS1A10_053T15_9000004392cztM0_level2.fits modeM0/AS1A10_053T15_9000004392cztM0_level2_quad_clean.evt
Size (bytes)240,632,640233,349,120
Size229.5 MB 222.5 MB
Events in quadrant A1,516,5081,436,009
Events in quadrant B1,405,6641,404,435
Events in quadrant C1,434,8861,330,588
Events in quadrant D1,267,0701,232,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0503460
B0746590
C0519900
D0697660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241763831.584216%
B241767893.263567%
C241766532.701026%
D2417612054.984282%

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 27191 24176 0 0 0.00% 0.00%
B 27191 24177 0 0 0.00% 0.00%
C 27191 24176 0 0 0.00% 0.00%
D 27191 24172 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 1497 11.56 395 372 97.3
A 9 19 1198 8.49 395 372 97.3
A 7 110 1158 8.08 395 372 97.3
B 2 9 1145 10.59 371 355 74.6
B 3 80 934 7.76 371 355 74.6
B 2 8 930 7.71 371 355 74.6
C 9 209 996 6.57 379 354 97.8
C 12 241 983 6.43 379 354 97.8
C 3 126 955 6.15 379 354 97.8
D 15 46 928 6.12 361 329 97.7
D 3 14 893 5.77 361 329 97.7
D 6 38 864 5.47 361 329 97.7

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