ASTROSAT CZTI

Data Quality Report

Orbit 26377

Creation date: 2024-06-27T19:28:00.308379
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/AS1A09_088T01_9000003808_26377cztM0_level2.evt modeM0/AS1A09_088T01_9000003808_26377cztM0_level2_quad_clean.evt
Size (bytes)861,819,840101,324,160
Size821.9 MB 96.6 MB
Events in quadrant A3,232,950693,272
Events in quadrant B3,277,442714,463
Events in quadrant C9,953,948575,110
Events in quadrant D9,163,715596,900

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143060
B0143310
C0344980
D0320630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6999891.271610%
B6998951.357531%
C6998267538.225207%
D6999174224.889270%

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 7279 7001 0 0 0.00% 0.00%
B 7278 7000 0 0 0.00% 0.00%
C 7278 6999 1645 1645 22.60% 23.50%
D 7279 7001 1293 1293 17.76% 18.47%

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 13 27758 161.56 829 812 166.8
A 13 254 11400 63.48 829 812 166.8
A 3 137 7670 41.12 829 812 166.8
B 0 230 33606 211.14 828 807 155.3
B 12 111 19087 117.68 828 807 155.3
B 11 111 17357 106.54 828 807 155.3
C 3 233 7128950 44386.74 691 695 160.6
C 14 238 108383 670.56 691 695 160.6
C 2 16 16885 100.81 691 695 160.6
D 7 80 3334077 18917.47 737 716 176.2
D 1 52 2871468 16292.08 737 716 176.2
D 11 176 78895 443.68 737 716 176.2

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