ASTROSAT CZTI

Data Quality Report

Orbit 20220330_T05_016T01_9000005036_level2

Creation date: 2022-04-01T12:46:02.400471
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/AS1T05_016T01_9000005036cztM0_level2_bc.evt modeM0/AS1T05_016T01_9000005036cztM0_level2_quad_clean.evt
Size (bytes)509,477,760136,546,560
Size485.9 MB 130.2 MB
Events in quadrant A1,841,209949,343
Events in quadrant B5,557,780829,798
Events in quadrant C2,416,015930,065
Events in quadrant D5,051,837857,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169640
B0352250
C0183020
D0284730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8186420.513071%
B8186213326.056682%
C8186981.197166%
D81865046.156853%

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 10961 8188 5 5 0.05% 0.06%
B 10961 8185 111 111 1.01% 1.36%
C 10961 8186 23 23 0.21% 0.28%
D 10961 8186 53 53 0.48% 0.65%

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 107980 1136.86 413 405 94.6
A 9 143 58323 612.08 413 405 94.6
A 15 169 54598 572.72 413 405 94.6
B 5 236 3692105 48420.46 366 357 76.2
B 5 200 262940 3444.0 366 357 76.2
B 5 172 123962 1621.19 366 357 76.2
C 15 214 326488 3462.78 399 394 94.2
C 1 23 243514 2581.68 399 394 94.2
C 0 10 133784 1416.46 399 394 94.2
D 8 195 2058520 21417.28 392 379 96.1
D 13 249 346814 3605.05 392 379 96.1
D 12 79 279776 2907.44 392 379 96.1

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