ASTROSAT CZTI

Data Quality Report

Orbit 36365

Creation date: 2022-06-20T04:25:20.448268
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/AS1A11_097T24_9000005196_36365cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36365cztM0_level2_quad_clean.evt
Size (bytes)223,531,20036,400,320
Size213.2 MB 34.7 MB
Events in quadrant A1,408,957235,068
Events in quadrant B2,009,087234,464
Events in quadrant C1,483,557225,580
Events in quadrant D1,685,588216,428

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058142
B077581
C059591
D068261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A266160.225479%
B266133612.626832%
C2661672.517850%
D2661702.630590%

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 4602 2662 8 8 0.17% 0.30%
B 4601 2660 271 271 5.89% 10.19%
C 4602 2662 65 65 1.41% 2.44%
D 4602 2662 75 75 1.63% 2.82%

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 9 143 88262 1365.62 311 305 64.4
A 10 83 87101 1347.59 311 305 64.4
A 12 189 25682 394.0 311 305 64.4
B 5 172 790028 13978.98 287 281 56.5
B 5 236 33982 596.53 287 281 56.5
B 0 213 10922 188.35 287 281 56.5
C 0 10 162314 2262.15 297 298 71.6
C 15 214 113856 1585.56 297 298 71.6
C 0 207 50018 694.22 297 298 71.6
D 12 6 374410 5126.41 298 291 73.0
D 7 223 60502 825.05 298 291 73.0
D 2 249 39984 543.9 298 291 73.0

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