ASTROSAT CZTI

Data Quality Report

Orbit 00947

Creation date: 2024-06-27T14:05:09.502458
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/AS1P01_998T01_9000000188_00947cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00947cztM0_level2_quad_clean.evt
Size (bytes)1,272,346,560116,406,720
Size1.2 GB 111.0 MB
Events in quadrant A9,395,287755,688
Events in quadrant B10,062,990750,670
Events in quadrant C10,010,369743,440
Events in quadrant D8,548,646733,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334550
B0354060
C0352820
D0309710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A780290.115355%
B7802740.948475%
C780290.115355%
D7802100.128172%

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 8207 7804 284 284 3.46% 3.64%
B 8207 7804 469 469 5.71% 6.01%
C 8207 7804 334 334 4.07% 4.28%
D 8207 7804 217 217 2.64% 2.78%

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 14 170 138210 234.94 2403 2425 578.0
A 12 243 36258 58.54 2403 2425 578.0
A 11 79 9047 11.46 2403 2425 578.0
B 5 191 177404 292.56 2530 2542 597.7
B 8 234 69296 111.69 2530 2542 597.7
B 12 52 56498 90.27 2530 2542 597.7
C 10 34 519960 807.45 2291 2372 641.0
C 15 241 400541 621.16 2291 2372 641.0
C 9 144 71326 107.57 2291 2372 641.0
D 1 4 301261 440.06 2192 2274 679.4
D 2 107 41648 57.95 2192 2274 679.4
D 13 169 22930 30.4 2192 2274 679.4

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