ASTROSAT CZTI

Data Quality Report

Orbit 36013

Creation date: 2022-08-09T18:48:27.201831
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/AS1T04_069T01_9000005158_36013cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36013cztM0_level2_quad_clean.evt
Size (bytes)501,805,44055,321,920
Size478.6 MB 52.8 MB
Events in quadrant A2,680,745345,448
Events in quadrant B2,964,332345,239
Events in quadrant C3,892,820309,184
Events in quadrant D5,299,080302,263

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111123
B0121132
C0146062
D0195222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532760.112634%
B53271252.346537%
C53274698.804205%
D53272424.542895%

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 7240 5328 0 0 0.00% 0.00%
B 7240 5327 81 81 1.12% 1.52%
C 7240 5327 351 351 4.85% 6.59%
D 7240 5328 227 227 3.14% 4.26%

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 161520 1228.99 648 636 130.9
A 13 254 8820 62.52 648 636 130.9
A 13 6 7026 48.81 648 636 130.9
B 5 172 250570 2046.93 645 628 122.1
B 4 81 34383 276.44 645 628 122.1
B 4 232 30063 241.06 645 628 122.1
C 9 187 1174249 8443.11 603 608 139.0
C 15 214 213699 1532.97 603 608 139.0
C 0 10 149435 1070.65 603 608 139.0
D 12 227 1477232 9799.87 616 599 150.7
D 12 235 787566 5222.81 616 599 150.7
D 12 6 263280 1743.32 616 599 150.7

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