ASTROSAT CZTI

Data Quality Report

Orbit 53498

Creation date: 2025-08-18T18:47:35.789219
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_002T07_9000006498_53498cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53498cztM0_level2_quad_clean.evt
Size (bytes)897,471,36083,684,160
Size855.9 MB 79.8 MB
Events in quadrant A11,282,279440,143
Events in quadrant B4,924,835704,612
Events in quadrant C12,940,500309,751
Events in quadrant D3,556,240613,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381612
B0190142
C0429972
D0150392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6689291743.608910%
B66896419.582897%
C6689381557.033936%
D66891281.913589%

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 7819 6690 2611 2611 33.39% 39.03%
B 7819 6690 425 425 5.44% 6.35%
C 7819 6690 3699 3699 47.31% 55.29%
D 7819 6690 40 40 0.51% 0.60%

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 63 5067036 31494.49 657 640 160.9
A 3 62 2920772 18152.56 657 640 160.9
A 15 174 555924 3451.84 657 640 160.9
B 0 171 1553120 9709.42 744 718 159.9
B 4 206 165627 1031.41 744 718 159.9
B 4 170 75272 466.29 744 718 159.9
C 1 241 5323421 39266.8 495 491 135.6
C 7 64 3985892 29399.96 495 491 135.6
C 14 246 759332 5597.91 495 491 135.6
D 1 0 186080 871.04 749 715 212.8
D 2 120 156470 731.9 749 715 212.8
D 3 12 88183 411.02 749 715 212.8

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