ASTROSAT CZTI

Data Quality Report

Orbit 49825

Creation date: 2024-12-14T10:15:49.989711
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_9000006440_49825cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49825cztM0_level2_quad_clean.evt
Size (bytes)1,090,722,24061,188,480
Size1.0 GB 58.4 MB
Events in quadrant A8,125,165557,399
Events in quadrant B3,674,925721,175
Events in quadrant C13,915,31875,339
Events in quadrant D14,158,94347,107

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286302
B0153081
C0457311
D0464211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6471124519.239685%
B64711532.364395%
C6472588290.883807%
D6472610494.313968%

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 7646 6472 1107 1107 14.48% 17.10%
B 7646 6472 36 36 0.47% 0.56%
C 7647 6472 4146 4146 54.22% 64.06%
D 7647 6473 4357 4357 56.98% 67.31%

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 4 2096842 11900.45 690 672 176.1
A 0 175 1209737 6864.15 690 672 176.1
A 4 13 470846 2669.29 690 672 176.1
B 10 28 123839 792.45 738 714 155.4
B 4 206 107266 685.78 738 714 155.4
B 5 49 97897 625.48 738 714 155.4
C 15 147 4473598 61148.86 251 250 73.2
C 15 197 1730902 23657.31 251 250 73.2
C 15 174 1219163 16662.05 251 250 73.2
D 7 61 7390218 83188.07 280 269 88.8
D 15 184 1860386 20939.19 280 269 88.8
D 7 126 918499 10336.44 280 269 88.8

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