ASTROSAT CZTI

Data Quality Report

Orbit 53793

Creation date: 2025-09-07T16:16:35.789864
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/AS1A14_022T04_9000006506_53793cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53793cztM0_level2_quad_clean.evt
Size (bytes)1,053,527,04078,508,800
Size1004.7 MB 74.9 MB
Events in quadrant A17,248,550112,561
Events in quadrant B3,992,930724,444
Events in quadrant C7,808,047549,555
Events in quadrant D9,376,763475,749

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0563241
B0170401
C0284421
D0330201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7394634485.799297%
B73942673.611036%
C7395141319.107505%
D7395199626.991210%

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 7704 7395 5935 5935 77.04% 80.26%
B 7704 7396 78 78 1.01% 1.05%
C 7705 7397 1107 1107 14.37% 14.97%
D 7705 7396 1639 1639 21.27% 22.16%

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 3 63 15338020 160468.81 384 374 95.6
A 4 249 118440 1235.26 384 374 95.6
A 8 249 117186 1222.14 384 374 95.6
B 8 234 441379 2625.82 775 745 167.8
B 7 0 180000 1068.22 775 745 167.8
B 0 213 76811 453.29 775 745 167.8
C 15 224 2871751 14982.23 691 685 191.6
C 1 241 1765892 9211.47 691 685 191.6
C 15 158 176737 918.7 691 685 191.6
D 8 176 5123600 27451.66 655 626 186.6
D 1 241 774436 4146.49 655 626 186.6
D 3 12 231184 1235.45 655 626 186.6

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