ASTROSAT CZTI

Data Quality Report

Orbit 57304

Creation date: 2026-05-01T21:15:48.760801
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_049T03_9000006570_57304cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57304cztM0_level2_quad_clean.evt
Size (bytes)452,790,72093,202,560
Size431.8 MB 88.9 MB
Events in quadrant A3,486,308624,447
Events in quadrant B3,509,782661,254
Events in quadrant C4,238,553551,002
Events in quadrant D5,031,229541,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147801
B0147362
C0171371
D0193941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6368831.303392%
B63671492.340192%
C63684687.349246%
D63683986.250000%

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 7428 6368 12 12 0.16% 0.19%
B 7427 6367 49 49 0.66% 0.77%
C 7428 6368 371 371 4.99% 5.83%
D 7428 6368 307 307 4.13% 4.82%

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 14 389956 2264.08 701 683 171.9
A 0 12 277414 1609.52 701 683 171.9
A 8 4 56097 322.3 701 683 171.9
B 5 185 435087 2974.6 682 657 146.0
B 0 171 114146 777.07 682 657 146.0
B 10 16 86566 588.23 682 657 146.0
C 15 224 1397991 8028.89 637 632 174.0
C 10 22 89338 509.68 637 632 174.0
C 14 96 73390 418.05 637 632 174.0
D 3 224 1414543 7571.1 660 630 186.8
D 2 249 456678 2442.01 660 630 186.8
D 8 240 412717 2206.61 660 630 186.8

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