ASTROSAT CZTI

Data Quality Report

Orbit 42026

Creation date: 2024-06-27T22:35:53.644639
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_006T12_9000005734_42026cztM0_level2.fits modeM0/AS1A12_006T12_9000005734_42026cztM0_level2_quad_clean.evt
Size (bytes)1,428,696,000375,321,600
Size1.3 GB 357.9 MB
Events in quadrant A13,231,0382,571,586
Events in quadrant B12,335,4652,611,897
Events in quadrant C10,580,1472,478,811
Events in quadrant D15,027,7582,180,274

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524158
B0511435
C0446055
D0587965

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221212381.075901%
B221235762.603625%
C22123150.067803%
D2212211345.126119%

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 31983 22127 180 180 0.56% 0.81%
B 31984 22128 394 394 1.23% 1.78%
C 31984 22128 0 0 0.00% 0.00%
D 31983 22127 895 895 2.80% 4.04%

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 1890925 3699.92 2526 2477 510.4
A 15 223 1379962 2698.82 2526 2477 510.4
A 12 189 154340 297.54 2526 2477 510.4
B 5 255 743459 1555.88 2499 2430 476.3
B 4 171 623083 1303.14 2499 2430 476.3
B 7 202 466173 973.69 2499 2430 476.3
C 15 214 909157 1608.32 2457 2477 563.7
C 9 54 26982 43.47 2457 2477 563.7
C 8 79 25551 40.93 2457 2477 563.7
D 13 249 2083908 3590.88 2377 2311 579.7
D 2 249 1735663 2990.14 2377 2311 579.7
D 1 52 1368488 2356.74 2377 2311 579.7

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