ASTROSAT CZTI

Data Quality Report

Orbit 41005

Creation date: 2024-06-27T22:23:13.917437
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_101T01_9000005586_41005cztM0_level2.fits modeM0/AS1T05_101T01_9000005586_41005cztM0_level2_quad_clean.evt
Size (bytes)521,208,000154,886,400
Size497.1 MB 147.7 MB
Events in quadrant A4,948,7651,035,780
Events in quadrant B4,205,1411,056,021
Events in quadrant C4,679,6211,013,717
Events in quadrant D4,711,322916,142

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204475
B0195422
C0203082
D0213762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9631110.114215%
B9633110.114191%
C9633540.560573%
D96331621.681719%

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 12288 9634 4 4 0.03% 0.04%
B 12288 9635 2 2 0.02% 0.02%
C 12288 9635 41 41 0.33% 0.43%
D 12288 9635 148 148 1.20% 1.54%

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 10 83 844866 3951.08 1044 1022 213.6
A 13 252 29429 133.01 1044 1022 213.6
A 13 254 16207 71.1 1044 1022 213.6
B 0 186 74514 365.57 1038 1009 201.1
B 5 255 37771 182.83 1038 1009 201.1
B 12 111 25566 122.13 1038 1009 201.1
C 15 214 410551 1732.94 1013 1015 236.3
C 14 254 159518 670.7 1013 1015 236.3
C 12 249 84031 351.28 1013 1015 236.3
D 12 233 358809 1456.19 1012 981 245.7
D 2 249 212406 860.4 1012 981 245.7
D 13 249 100218 403.85 1012 981 245.7

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