ASTROSAT CZTI

Data Quality Report

Orbit 12576

Creation date: 2024-06-27T16:29:22.864560
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/AS1A02_058T03_9000001870_12576cztM0_level2.evt modeM0/AS1A02_058T03_9000001870_12576cztM0_level2_quad_clean.evt
Size (bytes)218,790,72038,914,560
Size208.7 MB 37.1 MB
Events in quadrant A1,504,404244,402
Events in quadrant B1,766,565247,854
Events in quadrant C1,486,053246,058
Events in quadrant D1,666,156228,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062812
B071111
C061991
D068221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2964301.012146%
B2964812.732794%
C2964160.539811%
D2964461.551957%

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 4215 2965 1 1 0.02% 0.03%
B 4215 2965 34 34 0.81% 1.15%
C 4215 2965 0 0 0.00% 0.00%
D 4215 2966 30 30 0.71% 1.01%

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 12 96 14552 178.54 385 377 79.4
A 12 189 4214 48.33 385 377 79.4
A 0 226 3459 38.82 385 377 79.4
B 4 239 198375 2666.04 387 378 74.3
B 0 197 17902 235.96 387 378 74.3
B 0 229 11199 145.71 387 378 74.3
C 14 234 7252 78.08 379 381 88.0
C 13 61 2766 27.1 379 381 88.0
C 8 222 1486 12.56 379 381 88.0
D 1 52 193006 2142.42 371 359 89.9
D 13 249 23925 262.08 371 359 89.9
D 10 157 19469 212.52 371 359 89.9

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