ASTROSAT CZTI

Data Quality Report

Orbit 53221

Creation date: 2025-08-01T13:15:00.361196
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/AS1C09_011T06_9000006490_53221cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53221cztM0_level2_quad_clean.evt
Size (bytes)751,406,40084,245,760
Size716.6 MB 80.3 MB
Events in quadrant A3,093,575640,305
Events in quadrant B3,883,596645,084
Events in quadrant C12,509,835281,339
Events in quadrant D7,830,775536,246

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138462
B0161532
C0415012
D0277432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6417370.576593%
B64173675.719183%
C6417372758.080100%
D641769610.846190%

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 7492 6418 18 18 0.24% 0.28%
B 7492 6418 184 184 2.46% 2.87%
C 7492 6417 3467 3467 46.28% 54.03%
D 7492 6418 787 787 10.50% 12.26%

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 62 112041 641.61 683 662 173.6
A 14 254 88246 504.54 683 662 173.6
A 3 14 41092 232.9 683 662 173.6
B 12 17 537306 3812.39 657 634 140.8
B 8 128 163560 1157.39 657 634 140.8
B 2 249 151161 1069.31 657 634 140.8
C 1 241 4182387 31468.52 482 477 132.9
C 9 38 1849436 13913.26 482 477 132.9
C 15 165 1545626 11627.12 482 477 132.9
D 15 125 3235839 17523.8 644 616 184.6
D 2 37 688920 3728.24 644 616 184.6
D 11 176 346960 1876.0 644 616 184.6

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