ASTROSAT CZTI

Data Quality Report

Orbit 31656

Creation date: 2024-06-27T20:31:10.652785
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_056T01_9000004626_31656cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31656cztM0_level2_quad_clean.evt
Size (bytes)638,717,760116,614,080
Size609.1 MB 111.2 MB
Events in quadrant A3,416,966786,560
Events in quadrant B5,575,862797,057
Events in quadrant C5,037,868762,408
Events in quadrant D4,885,079743,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143372
B0209522
C0192592
D0188352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6338871.372673%
B63392263.565231%
C63396309.938476%
D63391332.098123%

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 8938 6340 2 2 0.02% 0.03%
B 8939 6341 25 25 0.28% 0.39%
C 8939 6341 254 254 2.84% 4.01%
D 8939 6341 36 36 0.40% 0.57%

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 12394 66.41 882 866 173.6
A 12 96 8996 46.83 882 866 173.6
A 3 137 8115 41.76 882 866 173.6
B 6 159 1797248 11202.64 881 862 160.4
B 10 245 105348 651.6 881 862 160.4
B 0 190 51606 316.45 881 862 160.4
C 0 10 811010 4209.95 833 841 192.4
C 10 22 469422 2434.93 833 841 192.4
C 3 233 324199 1680.29 833 841 192.4
D 8 195 1407575 6929.14 867 849 203.0
D 12 233 92844 453.14 867 849 203.0
D 13 249 35825 172.28 867 849 203.0

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