ASTROSAT CZTI

Data Quality Report

Orbit 52454

Creation date: 2025-06-11T14:00:09.593919
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_037T01_9000006476_52454cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52454cztM0_level2_quad_clean.evt
Size (bytes)402,073,92064,359,360
Size383.4 MB 61.4 MB
Events in quadrant A2,128,784438,573
Events in quadrant B3,239,086463,726
Events in quadrant C4,342,830375,568
Events in quadrant D4,818,941350,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B051
C072
D063

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010000224
B013404361
C016311261
D018199720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0962
B0952
C0962
D0962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4560240.526316%
B45522305.052724%
C455255212.126538%
D453253911.893204%

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 6973 4589 10 10 0.14% 0.22%
B 6974 4564 32 32 0.46% 0.70%
C 6974 4578 554 554 7.94% 12.10%
D 6974 4554 571 571 8.19% 12.54%

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 61 92015 760.87 485 472 120.3
A 12 17 36572 300.05 485 472 120.3
A 11 3 25342 206.71 485 472 120.3
B 5 172 1004866 9737.28 476 460 103.2
B 4 171 151111 1460.5 476 460 103.2
B 0 213 61651 593.22 476 460 103.2
C 15 231 993754 8149.8 442 437 121.9
C 1 45 410585 3365.11 442 437 121.9
C 12 254 332907 2727.8 442 437 121.9
D 15 93 1101466 8831.83 437 419 124.7
D 6 42 1090074 8740.46 437 419 124.7
D 12 17 371552 2976.97 437 419 124.7

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