ASTROSAT CZTI

Data Quality Report

Orbit 57659

Creation date: 2026-05-25T19:11:33.914451
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_57659cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57659cztM0_level2_quad_clean.evt
Size (bytes)436,705,920104,996,160
Size416.5 MB 100.1 MB
Events in quadrant A3,053,657689,599
Events in quadrant B3,215,031741,880
Events in quadrant C4,217,197656,552
Events in quadrant D5,119,564589,954

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145460
B0148121
C0177280
D0200870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A719990.125017%
B7199210.291707%
C71991211.680789%
D71994245.889707%

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 7199 7199 0 0 0.00% 0.00%
B 7199 7199 9 9 0.13% 0.13%
C 7199 7199 93 93 1.29% 1.29%
D 7199 7199 380 380 5.28% 5.28%

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 22551 114.49 776 755 190.4
A 13 248 20544 103.94 776 755 190.4
A 3 137 9568 46.29 776 755 190.4
B 10 247 48934 295.2 767 739 163.3
B 12 111 20075 118.44 767 739 163.3
B 11 111 19079 112.34 767 739 163.3
C 15 224 795970 3925.05 748 741 202.6
C 12 254 141493 694.72 748 741 202.6
C 8 7 125959 618.04 748 741 202.6
D 8 240 635647 3057.06 735 701 207.7
D 3 12 320762 1540.99 735 701 207.7
D 2 249 285098 1369.28 735 701 207.7

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