ASTROSAT CZTI

Data Quality Report

Orbit 39503

Creation date: 2024-06-27T22:05:25.701262
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/AS1A12_018T01_9000005488_39503cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39503cztM0_level2_quad_clean.evt
Size (bytes)534,870,720165,309,120
Size510.1 MB 157.7 MB
Events in quadrant A5,011,7171,112,407
Events in quadrant B4,146,3821,145,629
Events in quadrant C4,518,9411,099,315
Events in quadrant D5,392,278996,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209613
B0189182
C0193542
D0228752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9398340.361779%
B939870.074484%
C9398160.170249%
D93981671.776974%

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 13194 9400 20 20 0.15% 0.21%
B 13194 9400 0 0 0.00% 0.00%
C 13194 9400 4 4 0.03% 0.04%
D 13194 9400 137 137 1.04% 1.46%

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 10 83 666494 3185.61 1042 1021 208.9
A 6 10 153428 729.57 1042 1021 208.9
A 15 174 82200 388.6 1042 1021 208.9
B 12 111 24635 120.1 1047 1017 196.7
B 11 111 22426 108.87 1047 1017 196.7
B 14 111 21329 103.29 1047 1017 196.7
C 15 214 389255 1636.33 1037 1047 237.2
C 3 233 38592 158.26 1037 1047 237.2
C 0 10 22346 89.78 1037 1047 237.2
D 12 227 802342 3217.61 1022 994 249.1
D 13 249 331371 1326.54 1022 994 249.1
D 2 249 108401 431.27 1022 994 249.1

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