ASTROSAT CZTI

Data Quality Report

Orbit 14584

Creation date: 2024-06-27T16:57:08.100092
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/AS1A04_089T01_9000002146_14584cztM0_level2.evt modeM0/AS1A04_089T01_9000002146_14584cztM0_level2_quad_clean.evt
Size (bytes)2,402,101,440297,463,680
Size2.2 GB 283.7 MB
Events in quadrant A27,639,7491,764,381
Events in quadrant B14,914,4681,855,842
Events in quadrant C15,411,5251,814,803
Events in quadrant D13,035,7191,786,917

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05260
B05260
C05260
D05260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01001984
B0606264
C0631744
D0563434

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25978266110.243283%
B2597811164.295943%
C259782621.008546%
D259784041.555162%

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 27704 25982 1686 1686 6.09% 6.49%
B 27704 25983 593 593 2.14% 2.28%
C 27704 25983 0 0 0.00% 0.00%
D 27704 25983 135 135 0.49% 0.52%

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 0 23 14344307 23212.66 3061 2992 617.8
A 0 226 897690 1448.15 3061 2992 617.8
A 8 15 368664 591.87 3061 2992 617.8
B 10 16 2245013 3816.92 3082 3003 587.4
B 0 189 118745 197.05 3082 3003 587.4
B 0 205 92074 151.64 3082 3003 587.4
C 3 233 3588802 5135.38 3019 3035 698.2
C 13 61 21309 26.17 3019 3035 698.2
C 8 128 18611 22.31 3019 3035 698.2
D 10 199 550037 676.41 3018 2962 808.8
D 12 110 491970 604.61 3018 2962 808.8
D 1 52 210153 256.17 3018 2962 808.8

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