ASTROSAT CZTI

Data Quality Report

Orbit 59338

Creation date: 2026-09-17T11:39:27.110043
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_033T01_9000006608_59338cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59338cztM0_level2_quad_clean.evt
Size (bytes)1,847,358,720422,850,240
Size1.7 GB 403.3 MB
Events in quadrant A13,990,6872,747,127
Events in quadrant B17,597,8972,888,117
Events in quadrant C15,585,6752,685,951
Events in quadrant D18,939,8332,465,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05980
B05980
C05980
D05980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0631065
B0726687
C06691811
D0767145

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A293295521.882096%
B2932916165.509905%
C293273101.057046%
D293309223.143539%

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 32319 29334 204 204 0.63% 0.70%
B 32320 29334 841 841 2.60% 2.87%
C 32320 29333 98 98 0.30% 0.33%
D 32320 29335 632 632 1.96% 2.15%

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 1108008 1431.2 3201 3120 772.0
A 7 64 176431 224.5 3201 3120 772.0
A 10 251 129598 163.83 3201 3120 772.0
B 4 236 2173784 3298.31 3116 2994 658.2
B 5 236 923154 1398.09 3116 2994 658.2
B 4 171 897024 1358.39 3116 2994 658.2
C 1 16 1739738 2031.59 3136 3108 854.8
C 3 233 450879 523.82 3136 3108 854.8
C 12 252 402670 467.42 3136 3108 854.8
D 2 249 2946225 3387.32 3097 2962 868.9
D 12 110 1575405 1809.68 3097 2962 868.9
D 11 129 926224 1062.56 3097 2962 868.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct