ASTROSAT CZTI

Data Quality Report

Orbit 18686

Creation date: 2024-06-27T17:53:40.284442
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/AS1A05_226T06_9000002792_18686cztM0_level2.evt modeM0/AS1A05_226T06_9000002792_18686cztM0_level2_quad_clean.evt
Size (bytes)169,110,72035,588,160
Size161.3 MB 33.9 MB
Events in quadrant A1,159,478241,343
Events in quadrant B1,181,284241,485
Events in quadrant C1,121,993225,422
Events in quadrant D1,515,138218,025

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047090
B047790
C045220
D058470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207920.096200%
B208090.432692%
C2080110.528846%
D2080633.028846%

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 2079 2079 0 0 0.00% 0.00%
B 2080 2080 5 5 0.24% 0.24%
C 2080 2080 0 0 0.00% 0.00%
D 2080 2080 44 44 2.12% 2.12%

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 6 16 8486 135.59 296 292 60.4
A 3 1 6477 102.35 296 292 60.4
A 13 254 3212 48.32 296 292 60.4
B 10 245 21329 381.62 287 281 55.2
B 10 247 11617 205.53 287 281 55.2
B 12 111 5978 103.29 287 281 55.2
C 14 238 45342 698.71 276 278 64.5
C 13 61 1956 26.02 276 278 64.5
C 14 111 713 6.74 276 278 64.5
D 7 238 325445 4712.68 282 274 69.0
D 7 96 113977 1647.89 282 274 69.0
D 2 234 8782 123.31 282 274 69.0

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