ASTROSAT CZTI

Data Quality Report

Orbit 26555

Creation date: 2024-06-27T19:30:22.300744
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_095T02_9000003840_26555cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26555cztM0_level2_quad_clean.evt
Size (bytes)1,050,359,040167,336,640
Size1001.7 MB 159.6 MB
Events in quadrant A5,327,6501,123,436
Events in quadrant B5,570,6821,144,562
Events in quadrant C6,902,9901,093,394
Events in quadrant D13,264,035942,020

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228690
B0237130
C0275950
D0470140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11038660.597934%
B110381050.951259%
C110394904.438808%
D11039245322.221216%

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 11478 11039 30 30 0.26% 0.27%
B 11478 11039 36 36 0.31% 0.33%
C 11479 11039 275 275 2.40% 2.49%
D 11479 11039 2217 2217 19.31% 20.08%

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 0 13 216280 830.56 1296 1268 258.9
A 5 168 105616 403.08 1296 1268 258.9
A 13 254 18210 65.44 1296 1268 258.9
B 5 172 309989 1261.14 1287 1254 244.8
B 3 64 109589 442.53 1287 1254 244.8
B 0 229 40425 160.01 1287 1254 244.8
C 4 254 1243296 4316.84 1236 1243 287.7
C 3 233 637173 2210.22 1236 1243 287.7
C 14 238 196113 677.28 1236 1243 287.7
D 7 80 6683272 24940.2 1134 1106 267.9
D 1 52 1930590 7201.52 1134 1106 267.9
D 2 250 185700 688.97 1134 1106 267.9

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