ASTROSAT CZTI

Data Quality Report

Orbit 32357

Creation date: 2024-06-27T20:39:18.722893
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/AS1A09_131T01_9000004702_32357cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32357cztM0_level2_quad_clean.evt
Size (bytes)694,224,000139,544,640
Size662.1 MB 133.1 MB
Events in quadrant A3,602,441950,954
Events in quadrant B6,346,423944,388
Events in quadrant C5,187,207890,155
Events in quadrant D5,364,635901,707

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160614
B0247343
C0204963
D0211373

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77511301.677203%
B77514195.405754%
C77517489.650368%
D77512162.786737%

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 8166 7755 0 0 0.00% 0.00%
B 8166 7755 70 70 0.86% 0.90%
C 8166 7755 418 418 5.12% 5.39%
D 8166 7755 97 97 1.19% 1.25%

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 13 6 29479 153.66 925 902 186.0
A 13 254 15393 77.92 925 902 186.0
A 3 137 9642 47.0 925 902 186.0
B 6 159 2195904 12453.02 913 888 176.3
B 10 245 224027 1265.94 913 888 176.3
B 5 172 161400 910.63 913 888 176.3
C 0 10 1555265 7819.71 843 847 198.8
C 14 238 147816 739.35 843 847 198.8
C 2 16 72207 358.99 843 847 198.8
D 8 195 1152720 5398.19 888 863 213.4
D 12 6 306394 1431.88 888 863 213.4
D 11 164 193504 902.81 888 863 213.4

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