ASTROSAT CZTI

Data Quality Report

Orbit 23535

Creation date: 2024-06-27T18:55:50.604864
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/AS1A07_011T01_9000003482_23535cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23535cztM0_level2_quad_clean.evt
Size (bytes)1,498,492,800326,782,080
Size1.4 GB 311.6 MB
Events in quadrant A10,016,2552,139,472
Events in quadrant B11,012,4452,190,445
Events in quadrant C10,212,3442,092,616
Events in quadrant D12,709,0672,016,665

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04340
B04340
C04340
D04340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0435944
B0465915
C0441524
D0525334

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21190690.325625%
B211901820.858896%
C211902271.071260%
D211903901.840491%

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 26020 21193 9 9 0.03% 0.04%
B 26020 21192 56 56 0.22% 0.26%
C 26020 21192 4 4 0.02% 0.02%
D 26020 21194 226 226 0.87% 1.07%

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 13 254 36849 67.07 2588 2540 511.5
A 0 31 34541 62.56 2588 2540 511.5
A 0 226 22359 38.74 2588 2540 511.5
B 0 189 442094 920.0 2581 2519 477.8
B 3 64 186857 385.8 2581 2519 477.8
B 0 229 67932 136.9 2581 2519 477.8
C 14 238 401707 703.33 2472 2492 567.6
C 7 247 87996 150.64 2472 2492 567.6
C 0 10 60904 102.91 2472 2492 567.6
D 9 85 1620052 2710.95 2477 2404 596.7
D 1 52 1553782 2599.89 2477 2404 596.7
D 2 234 85241 138.82 2477 2404 596.7

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