ASTROSAT CZTI

Data Quality Report

Orbit 20210104_A10_123T03_9000004096_level2

Creation date: 2021-01-06T13:12:28.487417
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_123T03_9000004096cztM0_level2_bc.evt modeM0/AS1A10_123T03_9000004096cztM0_level2_quad_clean.evt
Size (bytes)2,197,272,960561,254,400
Size2.0 GB 535.3 MB
Events in quadrant A9,951,9023,580,212
Events in quadrant B10,519,7463,647,804
Events in quadrant C9,802,9283,523,916
Events in quadrant D33,235,7953,189,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0947560
B0968110
C0956460
D01814740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09060
B09060
C09060
D09060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A445345811.304621%
B445346431.443841%
C445348291.861499%
D44534885019.872457%

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 52114 44527 36 36 0.07% 0.08%
B 52114 44526 16 16 0.03% 0.04%
C 52114 44527 2 2 0.00% 0.00%
D 52114 44418 1662 1662 3.19% 3.74%

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 15 169 153554 283.71 2509 2467 532.5
A 13 254 70980 128.65 2509 2467 532.5
A 12 96 67600 122.31 2509 2467 532.5
B 0 230 387494 816.5 2528 2470 471.6
B 5 255 230799 484.21 2528 2470 471.6
B 14 207 134590 280.18 2528 2470 471.6
C 7 247 216595 377.45 2443 2437 567.4
C 3 233 166106 288.46 2443 2437 567.4
C 8 128 15036 22.21 2443 2437 567.4
D 1 52 14567255 28028.46 2277 2205 519.7
D 8 195 8408300 16176.39 2277 2205 519.7
D 12 233 623925 1196.42 2277 2205 519.7

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