ASTROSAT CZTI

Data Quality Report

Orbit 52934

Creation date: 2025-07-17T05:24:44.486978
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/AS1A13_003T01_9000006486_52934cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52934cztM0_level2_quad_clean.evt
Size (bytes)856,359,36071,899,200
Size816.7 MB 68.6 MB
Events in quadrant A15,647,00334,292
Events in quadrant B3,687,429659,610
Events in quadrant C4,199,379562,833
Events in quadrant D7,670,483474,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0508951
B0153611
C0169781
D0272117

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6386613896.116505%
B63872894.524816%
C63873485.448567%
D6386119018.634513%

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 7455 6385 5268 5268 70.66% 82.51%
B 7457 6388 109 109 1.46% 1.71%
C 7457 6389 200 200 2.68% 3.13%
D 7456 6387 983 983 13.18% 15.39%

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 9 191 14019559 176898.51 313 305 79.3
A 13 248 100542 1264.82 313 305 79.3
A 4 254 93177 1171.88 313 305 79.3
B 1 255 523505 3510.03 694 671 149.0
B 4 81 67726 450.17 694 671 149.0
B 1 239 59334 393.83 694 671 149.0
C 9 38 615063 3353.2 667 658 183.2
C 15 224 244631 1331.52 667 658 183.2
C 7 80 209158 1137.92 667 658 183.2
D 8 176 2458605 13622.26 633 607 180.4
D 15 78 556533 3080.95 633 607 180.4
D 10 172 452776 2505.93 633 607 180.4

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