ASTROSAT CZTI

Data Quality Report

Orbit 59283

Creation date: 2026-09-12T00:36:58.858591
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_021T06_9000006606_59283cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59283cztM0_level2_quad_clean.evt
Size (bytes)709,450,56084,758,400
Size676.6 MB 80.8 MB
Events in quadrant A3,303,649669,005
Events in quadrant B3,623,354721,392
Events in quadrant C6,533,037487,373
Events in quadrant D12,303,371241,516

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142962
B0152252
C0236862
D0409924

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6407971.513969%
B64071752.731388%
C6407163225.472140%
D6407403262.931169%

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 7607 6408 27 27 0.35% 0.42%
B 7607 6408 54 54 0.71% 0.84%
C 7607 6408 1218 1218 16.01% 19.01%
D 7607 6408 3281 3281 43.13% 51.20%

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 7 64 359312 2028.75 712 693 176.8
A 10 251 50617 282.43 712 693 176.8
A 0 128 42323 235.51 712 693 176.8
B 5 185 315312 2132.92 708 682 147.5
B 4 236 98113 660.5 708 682 147.5
B 6 255 87997 591.92 708 682 147.5
C 15 198 3486162 20841.02 612 606 167.2
C 12 252 349745 2087.59 612 606 167.2
C 14 96 154650 921.07 612 606 167.2
D 12 110 9643944 62956.92 527 500 153.2
D 11 129 172775 1124.69 527 500 153.2
D 8 240 113196 735.73 527 500 153.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct