ASTROSAT CZTI

Data Quality Report

Orbit 56476

Creation date: 2026-03-07T04:20:39.316811
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_060T01_9000006556_56476cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56476cztM0_level2_quad_clean.evt
Size (bytes)667,244,16082,388,160
Size636.3 MB 78.6 MB
Events in quadrant A11,558,253412,077
Events in quadrant B4,156,659611,807
Events in quadrant C3,294,431540,057
Events in quadrant D5,186,671476,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388342
B0167082
C0146552
D0198462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499245537.775042%
B64991171.800277%
C64991011.554085%
D64994807.385752%

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 7926 6776 2730 2730 34.44% 40.29%
B 7926 6782 50 50 0.63% 0.74%
C 7926 6782 72 72 0.91% 1.06%
D 7926 6782 449 449 5.66% 6.62%

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 4 95 7433297 46586.52 639 624 159.5
A 7 64 1017282 6372.21 639 624 159.5
A 3 14 224927 1405.89 639 624 159.5
B 5 236 494413 3307.73 697 675 149.3
B 5 172 433227 2897.83 697 675 149.3
B 0 63 190287 1270.28 697 675 149.3
C 13 3 438765 2332.66 677 670 187.8
C 12 252 89472 472.83 677 670 187.8
C 15 244 38572 201.81 677 670 187.8
D 12 4 965446 5190.72 651 624 185.9
D 2 249 889088 4779.92 651 624 185.9
D 8 129 187817 1007.09 651 624 185.9

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