ASTROSAT CZTI

Data Quality Report

Orbit 32737

Creation date: 2024-06-27T20:41:25.112120
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_123T04_9000004726_32737cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32737cztM0_level2_quad_clean.evt
Size (bytes)783,083,520146,064,960
Size746.8 MB 139.3 MB
Events in quadrant A4,933,132947,140
Events in quadrant B5,245,907945,835
Events in quadrant C4,570,516957,681
Events in quadrant D8,295,186885,750

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231601807
B0240752155
C0222501818
D0352153623

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022018
B021917
C022016
D022018

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99291541.551012%
B9911970.978711%
C9943500.502866%
D98705895.967579%

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 13386 10053 73 73 0.55% 0.73%
B 13336 10021 69 69 0.52% 0.69%
C 13340 10065 30 30 0.22% 0.30%
D 13223 9974 479 479 3.62% 4.80%

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 15 237 287973 1263.0 1134 1111 227.1
A 15 249 247085 1082.97 1134 1111 227.1
A 13 254 20231 84.18 1134 1111 227.1
B 3 26 288511 1323.97 1140 1113 217.1
B 0 219 189682 868.69 1140 1113 217.1
B 0 199 82165 373.39 1140 1113 217.1
C 9 54 73912 282.14 1109 1121 258.0
C 0 10 43482 164.19 1109 1121 258.0
C 8 79 41162 155.2 1109 1121 258.0
D 7 80 994943 3862.64 1073 1048 257.3
D 8 195 991759 3850.27 1073 1048 257.3
D 2 250 840751 3263.39 1073 1048 257.3

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