ASTROSAT CZTI

Data Quality Report

Orbit 58866

Creation date: 2026-08-15T01:33:10.248157
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_004T07_9000006598_58866cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58866cztM0_level2_quad_clean.evt
Size (bytes)2,789,807,040351,247,680
Size2.6 GB 335.0 MB
Events in quadrant A25,827,2612,424,065
Events in quadrant B36,330,9621,818,521
Events in quadrant C15,770,1002,446,994
Events in quadrant D23,303,9372,126,848

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0951036
B01261663
C0657585
D0868014

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05340
B05340
C05340
D05340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26435308211.658786%
B26438938835.509494%
C2643711164.221356%
D26437336512.728373%

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 31926 26438 2615 2615 8.19% 9.89%
B 31926 26438 7294 7294 22.85% 27.59%
C 31926 26439 712 712 2.23% 2.69%
D 31926 26439 2939 2939 9.21% 11.12%

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 15 233 10664711 14932.66 2870 2793 714.0
A 3 14 1521457 2126.98 2870 2793 714.0
A 14 238 738901 1030.96 2870 2793 714.0
B 5 172 15962812 30157.59 2510 2414 529.2
B 5 185 5708741 10782.25 2510 2414 529.2
B 2 249 3001864 5667.54 2510 2414 529.2
C 9 38 2034534 2579.84 2865 2830 787.5
C 12 252 528621 667.65 2865 2830 787.5
C 6 223 488236 616.36 2865 2830 787.5
D 12 110 8416167 10577.09 2789 2664 795.4
D 11 129 1792257 2249.8 2789 2664 795.4
D 5 38 969440 1215.39 2789 2664 795.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct