ASTROSAT CZTI

Data Quality Report

Orbit 42207

Creation date: 2024-06-27T22:38:32.336423
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_089T01_9000005776_42207cztM0_level2.fits modeM0/AS1A12_089T01_9000005776_42207cztM0_level2_quad_clean.evt
Size (bytes)571,340,160139,832,640
Size544.9 MB 133.4 MB
Events in quadrant A5,083,185933,425
Events in quadrant B5,061,532930,557
Events in quadrant C4,024,944928,209
Events in quadrant D6,294,497829,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201252
B0211162
C0176792
D0247422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88261701.926127%
B88264495.087242%
C882630.033990%
D88263433.886245%

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 11512 8828 155 155 1.35% 1.76%
B 11512 8828 390 390 3.39% 4.42%
C 11512 8828 0 0 0.00% 0.00%
D 11512 8828 299 299 2.60% 3.39%

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 794209 4029.74 955 933 196.9
A 15 222 374740 1898.89 955 933 196.9
A 13 248 177402 896.44 955 933 196.9
B 7 202 988651 5393.69 940 914 183.1
B 3 112 176097 956.61 940 914 183.1
B 0 229 121482 658.38 940 914 183.1
C 15 214 363722 1650.39 938 944 219.8
C 13 61 6257 24.17 938 944 219.8
C 15 159 3891 13.41 938 944 219.8
D 1 52 1515368 6694.78 924 897 226.2
D 2 249 324511 1430.55 924 897 226.2
D 12 6 282058 1242.88 924 897 226.2

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