ASTROSAT CZTI

Data Quality Report

Orbit 58263

Creation date: 2026-07-05T09:27:07.163030
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_044T03_9000006588_58263cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58263cztM0_level2_quad_clean.evt
Size (bytes)567,218,88087,796,800
Size540.9 MB 83.7 MB
Events in quadrant A3,040,373600,920
Events in quadrant B4,028,609639,014
Events in quadrant C3,190,688579,999
Events in quadrant D10,241,256392,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138551
B0162571
C0142811
D0348491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6387350.547988%
B63881552.426425%
C6388921.440200%
D6388204131.950532%

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 7437 6388 18 18 0.24% 0.28%
B 7438 6389 87 87 1.17% 1.36%
C 7438 6389 59 59 0.79% 0.92%
D 7438 6389 1975 1975 26.55% 30.91%

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 8 249 234043 1390.94 676 658 167.8
A 13 248 52356 308.11 676 658 167.8
A 10 251 28686 167.04 676 658 167.8
B 2 249 425335 2956.65 669 643 143.6
B 4 206 221841 1539.95 669 643 143.6
B 0 156 149534 1036.56 669 643 143.6
C 12 252 205571 1134.09 657 651 180.7
C 6 223 111577 613.9 657 651 180.7
C 14 254 77431 424.93 657 651 180.7
D 12 110 4932541 30040.12 571 544 164.2
D 8 160 2773382 16888.98 571 544 164.2
D 2 249 82388 498.5 571 544 164.2

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