ASTROSAT CZTI

Data Quality Report

Orbit 57669

Creation date: 2026-05-26T11:07:24.619251
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_125T09_9000006578_57669cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57669cztM0_level2_quad_clean.evt
Size (bytes)479,485,44097,202,880
Size457.3 MB 92.7 MB
Events in quadrant A3,118,084673,296
Events in quadrant B3,699,512716,486
Events in quadrant C4,560,961624,750
Events in quadrant D5,872,832482,893

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137511
B0153341
C0178121
D0218661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6397590.922307%
B63971973.079569%
C63972894.517743%
D6397134120.962951%

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 7627 6398 16 16 0.21% 0.25%
B 7627 6398 78 78 1.02% 1.22%
C 7627 6397 224 224 2.94% 3.50%
D 7627 6397 1047 1047 13.73% 16.37%

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 7 223 200314 1120.93 725 707 178.1
A 10 251 64398 357.67 725 707 178.1
A 4 3 15597 83.62 725 707 178.1
B 4 80 625294 4174.14 713 687 149.6
B 10 16 135362 900.01 713 687 149.6
B 5 185 46270 304.62 713 687 149.6
C 15 224 1276085 6738.71 701 694 189.3
C 14 254 175617 924.23 701 694 189.3
C 12 2 124964 656.6 701 694 189.3
D 8 240 2935123 17467.46 598 571 168.0
D 7 253 343721 2042.55 598 571 168.0
D 2 120 54000 318.03 598 571 168.0

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