ASTROSAT CZTI

Data Quality Report

Orbit 01162

Creation date: 2024-06-27T14:08:28.147038
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/AS1P01_997T03_9000000216_01162cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01162cztM0_level2_quad_clean.evt
Size (bytes)1,230,917,760113,506,560
Size1.1 GB 108.2 MB
Events in quadrant A9,361,089746,527
Events in quadrant B9,667,339739,981
Events in quadrant C9,259,182712,430
Events in quadrant D8,487,025709,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332012
B0340731
C0329291
D0306111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7612110.144509%
B7612240.315292%
C7612140.183920%
D7612200.262743%

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 7637 7613 316 316 4.14% 4.15%
B 7637 7613 363 363 4.75% 4.77%
C 7637 7613 277 277 3.63% 3.64%
D 7637 7613 233 233 3.05% 3.06%

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 12 243 142437 246.2 2367 2386 568.9
A 4 32 133524 230.53 2367 2386 568.9
A 11 79 8645 11.0 2367 2386 568.9
B 6 53 145211 245.97 2447 2458 580.4
B 15 22 59926 99.02 2447 2458 580.4
B 14 53 44087 71.73 2447 2458 580.4
C 15 241 381290 608.39 2231 2308 622.9
C 9 83 64726 100.2 2231 2308 622.9
C 3 111 34288 51.34 2231 2308 622.9
D 13 252 82942 119.7 2188 2265 674.0
D 10 125 75812 109.12 2188 2265 674.0
D 10 215 37935 52.92 2188 2265 674.0

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