ASTROSAT CZTI

Data Quality Report

Orbit 57941

Creation date: 2026-06-13T19:12:59.564460
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_031T01_9000006584_57941cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57941cztM0_level2_quad_clean.evt
Size (bytes)353,848,32088,816,320
Size337.5 MB 84.7 MB
Events in quadrant A2,830,035578,450
Events in quadrant B3,069,393615,536
Events in quadrant C3,355,167552,011
Events in quadrant D3,373,146521,475

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127421
B0135041
C0141641
D0142511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60431031.704451%
B60421412.333664%
C60431111.836836%
D60431121.853384%

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 6908 6044 26 26 0.38% 0.43%
B 6907 6043 44 44 0.64% 0.73%
C 6908 6044 53 53 0.77% 0.88%
D 6908 6044 48 48 0.69% 0.79%

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 64 90210 544.87 669 652 164.4
A 7 223 41812 250.42 669 652 164.4
A 13 248 39187 234.45 669 652 164.4
B 4 201 100337 707.22 652 628 141.0
B 10 247 64006 449.53 652 628 141.0
B 3 238 50276 352.15 652 628 141.0
C 15 224 601709 3419.09 644 638 175.8
C 14 254 92677 523.55 644 638 175.8
C 12 252 73476 414.33 644 638 175.8
D 2 249 333892 1812.39 649 621 183.9
D 3 12 139582 755.7 649 621 183.9
D 8 240 73037 393.81 649 621 183.9

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