ASTROSAT CZTI

Data Quality Report

Orbit 21901

Creation date: 2024-06-27T18:33:41.950881
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/AS1A07_010T06_9000003238_21901cztM0_level2.evt modeM0/AS1A07_010T06_9000003238_21901cztM0_level2_quad_clean.evt
Size (bytes)725,702,400117,820,800
Size692.1 MB 112.4 MB
Events in quadrant A3,297,271849,014
Events in quadrant B3,403,514872,676
Events in quadrant C5,027,466748,678
Events in quadrant D9,817,320651,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138802
B0141382
C0189782
D0335252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63871292.019728%
B63881392.175955%
C638884813.274890%
D6388256540.153413%

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 9062 6387 1 1 0.01% 0.02%
B 9063 6389 5 5 0.06% 0.08%
C 9063 6389 650 650 7.17% 10.17%
D 9063 6388 2486 2486 27.43% 38.92%

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 4 2 36204 214.33 836 824 165.1
A 5 16 36016 213.19 836 824 165.1
A 13 254 11243 63.12 836 824 165.1
B 3 64 44084 280.54 841 821 154.2
B 12 111 17615 108.9 841 821 154.2
B 0 190 16823 103.77 841 821 154.2
C 10 22 1988942 11627.61 745 752 171.0
C 14 238 120175 698.43 745 752 171.0
C 0 10 6648 34.48 745 752 171.0
D 7 238 7222143 46673.91 642 625 154.7
D 2 136 45293 288.7 642 625 154.7
D 0 11 44820 285.64 642 625 154.7

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