ASTROSAT CZTI

Data Quality Report

Orbit 16657

Creation date: 2024-06-27T17:25:45.586584
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_078T01_9000002462_16657cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16657cztM0_level2_quad_clean.evt
Size (bytes)881,729,280215,663,040
Size840.9 MB 205.7 MB
Events in quadrant A5,676,2341,467,566
Events in quadrant B5,997,5171,492,212
Events in quadrant C5,775,3391,435,877
Events in quadrant D8,503,9211,368,499

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244303
B0250912
C0244552
D0331612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111071801.620600%
B111071371.233456%
C111071691.521563%
D111075124.609706%

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 13278 11110 36 36 0.27% 0.32%
B 13278 11110 4 4 0.03% 0.04%
C 13278 11110 0 0 0.00% 0.00%
D 13278 11110 359 359 2.70% 3.23%

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 15 174 428844 1587.64 1346 1320 269.3
A 9 143 62812 228.36 1346 1320 269.3
A 0 226 12060 39.88 1346 1320 269.3
B 15 35 320406 1280.95 1343 1310 249.1
B 0 189 116423 462.1 1343 1310 249.1
B 0 229 74749 294.81 1343 1310 249.1
C 3 233 552557 1872.87 1281 1286 294.3
C 14 238 200587 677.1 1281 1286 294.3
C 7 247 27978 90.68 1281 1286 294.3
D 2 16 1804122 5873.33 1279 1242 307.0
D 1 52 703156 2286.66 1279 1242 307.0
D 15 0 632775 2057.38 1279 1242 307.0

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