ASTROSAT CZTI

Data Quality Report

Orbit 56526

Creation date: 2026-03-10T15:12:42.101950
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_56526cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56526cztM0_level2_quad_clean.evt
Size (bytes)868,432,32097,865,280
Size828.2 MB 93.3 MB
Events in quadrant A5,210,205737,056
Events in quadrant B12,034,699447,421
Events in quadrant C6,512,457649,044
Events in quadrant D7,775,383578,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211770
B0411430
C0248350
D0284980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7924720.908632%
B7925377247.596215%
C792583910.586751%
D7925115714.599369%

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 7924 7924 56 56 0.71% 0.71%
B 7925 7925 3206 3206 40.45% 40.45%
C 7925 7925 818 818 10.32% 10.32%
D 7925 7925 1180 1180 14.89% 14.89%

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 0 12 1209526 5677.6 856 831 212.9
A 4 159 252641 1182.83 856 831 212.9
A 4 95 165024 771.26 856 831 212.9
B 4 206 8769779 62342.4 657 632 140.7
B 0 213 352489 2501.45 657 632 140.7
B 5 172 101613 717.9 657 632 140.7
C 15 230 2280303 10436.52 801 793 218.4
C 12 252 365393 1669.29 801 793 218.4
C 6 223 214123 976.71 801 793 218.4
D 8 240 2178646 9636.44 789 754 226.0
D 2 249 1337217 5913.4 789 754 226.0
D 3 12 226761 1000.0 789 754 226.0

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