ASTROSAT CZTI

Data Quality Report

Orbit 46754

Creation date: 2024-06-27T23:27:14.221606
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/AS1A13_092T17_9000006262_46754cztM0_level2.fits modeM0/AS1A13_092T17_9000006262_46754cztM0_level2_quad_clean.evt
Size (bytes)906,050,880194,428,800
Size864.1 MB 185.4 MB
Events in quadrant A13,098,7591,252,225
Events in quadrant B6,354,6251,325,277
Events in quadrant C5,596,3511,289,558
Events in quadrant D7,522,1041,155,041

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473361
B0274771
C0261451
D0312031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125076825.452946%
B125082161.726895%
C12508640.511673%
D125083462.766230%

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 13018 12508 164 164 1.26% 1.31%
B 13019 12509 38 38 0.29% 0.30%
C 13019 12511 12 12 0.09% 0.10%
D 13019 12511 282 282 2.17% 2.25%

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 5803437 19906.54 1390 1357 291.5
A 9 191 1607468 5510.46 1390 1357 291.5
A 13 248 229126 781.46 1390 1357 291.5
B 3 112 246436 873.92 1402 1356 280.4
B 15 201 188034 665.67 1402 1356 280.4
B 0 198 129359 456.44 1402 1356 280.4
C 14 254 124978 378.52 1382 1389 326.5
C 3 233 55488 165.69 1382 1389 326.5
C 12 2 17627 49.73 1382 1389 326.5
D 13 249 1084218 3103.44 1367 1323 348.9
D 13 138 578960 1655.44 1367 1323 348.9
D 1 52 291545 831.74 1367 1323 348.9

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