ASTROSAT CZTI

Data Quality Report

Orbit 56247

Creation date: 2026-02-19T19:38:20.782340
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_049T01_9000006552_56247cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56247cztM0_level2_quad_clean.evt
Size (bytes)794,793,60075,225,600
Size758.0 MB 71.7 MB
Events in quadrant A13,487,701215,880
Events in quadrant B4,011,094635,026
Events in quadrant C3,433,869573,763
Events in quadrant D8,003,015416,015

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0443551
B0162261
C0148841
D0281111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254436169.731372%
B62543094.940838%
C62552393.820943%
D6255162826.027178%

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 7239 6255 3820 3820 52.77% 61.07%
B 7239 6256 125 125 1.73% 2.00%
C 7240 6257 136 136 1.88% 2.17%
D 7240 6257 1370 1370 18.92% 21.90%

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 15 32 5159362 44208.8 466 454 116.7
A 8 176 3175365 27207.11 466 454 116.7
A 12 115 1473438 12622.6 466 454 116.7
B 1 207 323683 2261.44 667 643 142.8
B 4 171 235010 1640.68 667 643 142.8
B 5 172 131981 919.43 667 643 142.8
C 5 250 330536 1833.8 656 648 179.9
C 13 3 316170 1753.94 656 648 179.9
C 6 223 67451 371.35 656 648 179.9
D 8 129 4469234 26664.24 581 553 167.6
D 2 249 479592 2858.38 581 553 167.6
D 11 129 328394 1956.2 581 553 167.6

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