ASTROSAT CZTI

Data Quality Report

Orbit 20537

Creation date: 2024-06-27T18:16:32.560298
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/AS1A05_022T08_9000003036_20537cztM0_level2.evt modeM0/AS1A05_022T08_9000003036_20537cztM0_level2_quad_clean.evt
Size (bytes)263,471,04032,837,760
Size251.3 MB 31.3 MB
Events in quadrant A2,194,670204,084
Events in quadrant B1,818,936209,359
Events in quadrant C1,852,435193,672
Events in quadrant D1,918,068182,870

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083562
B072221
C072601
D075501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28511866.524027%
B2851893.121712%
C28511254.384427%
D28511394.875482%

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 4056 2852 80 80 1.97% 2.81%
B 4056 2852 16 16 0.39% 0.56%
C 4056 2852 10 10 0.25% 0.35%
D 4056 2852 89 89 2.19% 3.12%

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 6 16 681453 8518.26 389 383 80.0
A 5 16 8455 100.96 389 383 80.0
A 8 205 5533 64.41 389 383 80.0
B 7 220 135432 1819.07 388 379 74.2
B 0 197 52069 696.23 388 379 74.2
B 5 172 30428 404.74 388 379 74.2
C 9 221 318326 3630.48 368 371 87.6
C 14 238 58108 659.25 368 371 87.6
C 0 207 32183 363.24 368 371 87.6
D 1 52 220394 2392.27 372 361 92.0
D 12 238 105720 1145.49 372 361 92.0
D 7 38 91137 986.94 372 361 92.0

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