ASTROSAT CZTI

Data Quality Report

Orbit 31299

Creation date: 2024-06-27T20:26:21.204611
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/AS1A10_058T08_9000004532_31299cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31299cztM0_level2_quad_clean.evt
Size (bytes)680,748,48082,353,600
Size649.2 MB 78.5 MB
Events in quadrant A3,568,260518,483
Events in quadrant B5,648,205510,341
Events in quadrant C6,709,487463,653
Events in quadrant D4,199,536495,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149971
B0220121
C0251061
D0172381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72651051.445286%
B72651882.587749%
C72657119.786648%
D72661381.899257%

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 7565 7266 0 0 0.00% 0.00%
B 7565 7266 4 4 0.05% 0.06%
C 7564 7265 217 217 2.87% 2.99%
D 7566 7267 9 9 0.12% 0.12%

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 13 254 14257 71.77 924 903 186.1
A 3 137 9641 46.96 924 903 186.1
A 0 226 7778 36.95 924 903 186.1
B 6 159 2012166 11406.56 906 883 176.3
B 4 80 36791 203.64 906 883 176.3
B 12 111 21612 117.56 906 883 176.3
C 3 233 3181410 16010.22 845 849 198.7
C 14 238 155689 779.43 845 849 198.7
C 0 10 35998 176.93 845 849 198.7
D 8 195 729264 3146.5 884 865 231.5
D 12 233 44373 187.94 884 865 231.5
D 2 250 41029 173.5 884 865 231.5

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