ASTROSAT CZTI

Data Quality Report

Orbit 57406

Creation date: 2026-05-08T17:59:00.909382
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_102T01_9000006572_57406cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57406cztM0_level2_quad_clean.evt
Size (bytes)457,560,00086,595,840
Size436.4 MB 82.6 MB
Events in quadrant A3,604,862583,291
Events in quadrant B2,959,689624,215
Events in quadrant C6,475,904474,300
Events in quadrant D3,430,593521,569

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150401
B0130371
C0233661
D0143991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5998971.617206%
B5999781.300217%
C5998118519.756586%
D59981752.917639%

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 7068 5999 14 14 0.20% 0.23%
B 7069 6000 14 14 0.20% 0.23%
C 7067 5998 919 919 13.00% 15.32%
D 7068 5999 101 101 1.43% 1.68%

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 12 1052065 6546.97 652 636 160.6
A 3 14 11968 70.56 652 636 160.6
A 4 3 10707 62.71 652 636 160.6
B 0 216 177246 1284.68 637 613 137.5
B 10 247 59008 424.72 637 613 137.5
B 5 185 54086 388.92 637 613 137.5
C 15 224 3935381 25200.53 571 564 156.1
C 14 254 73138 464.8 571 564 156.1
C 12 252 71855 456.58 571 564 156.1
D 3 224 318042 1810.14 625 598 175.4
D 2 249 153457 871.64 625 598 175.4
D 8 240 142185 807.36 625 598 175.4

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