ASTROSAT CZTI

Data Quality Report

Orbit 06291

Creation date: 2024-06-27T15:05:15.239796
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_118T01_9000000826_06291cztM0_level2.evt modeM0/AS1A02_118T01_9000000826_06291cztM0_level2_quad_clean.evt
Size (bytes)2,859,606,720515,551,680
Size2.7 GB 491.7 MB
Events in quadrant A19,062,7823,354,148
Events in quadrant B20,627,0523,357,693
Events in quadrant C15,034,3303,359,167
Events in quadrant D29,504,6263,122,933

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07180
B07180
C07180
D07180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0795287
B0859486
C0711206
D01119806

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A352482010.570245%
B3524814244.039946%
C35248950.269519%
D3524823906.780527%

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 38678 35252 25 25 0.06% 0.07%
B 38678 35251 772 772 2.00% 2.19%
C 38678 35252 4 4 0.01% 0.01%
D 38678 35249 1989 1989 5.14% 5.64%

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 8 15 3034465 3822.55 3923 3836 792.8
A 15 236 673797 845.03 3923 3836 792.8
A 13 251 124937 152.74 3923 3836 792.8
B 3 64 3063375 4192.91 3913 3817 729.7
B 0 219 1335564 1825.06 3913 3817 729.7
B 15 204 660612 900.09 3913 3817 729.7
C 9 54 58852 62.49 3832 3846 880.2
C 13 61 30517 30.3 3832 3846 880.2
C 1 16 17766 15.81 3832 3846 880.2
D 2 63 6983207 7714.61 3737 3622 904.7
D 12 220 5166253 5706.31 3737 3622 904.7
D 2 152 1223551 1348.4 3737 3622 904.7

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