ASTROSAT CZTI

Data Quality Report

Orbit 34315

Creation date: 2022-02-01T17:53:59.137160
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/AS1A11_091T01_9000004894_34315cztM0_level2.evt modeM0/AS1A11_091T01_9000004894_34315cztM0_level2_quad_clean.evt
Size (bytes)473,641,92048,476,160
Size451.7 MB 46.2 MB
Events in quadrant A1,980,227300,367
Events in quadrant B3,016,908293,147
Events in quadrant C2,182,354300,169
Events in quadrant D6,873,762271,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086321
B0117091
C089151
D0234161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A428720.046653%
B42872405.598321%
C428790.209937%
D4287146534.173081%

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 5720 4288 0 0 0.00% 0.00%
B 5720 4288 157 157 2.74% 3.66%
C 5720 4288 6 6 0.10% 0.14%
D 5720 4288 1251 1251 21.87% 29.17%

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 6 19560 186.56 502 490 102.2
A 10 83 15895 150.7 502 490 102.2
A 13 254 7402 67.62 502 490 102.2
B 5 172 844098 8776.44 489 476 96.1
B 5 255 81000 837.71 489 476 96.1
B 4 251 50895 524.52 489 476 96.1
C 15 214 178603 1553.08 488 491 114.7
C 0 10 45351 391.16 488 491 114.7
C 14 254 18661 158.44 488 491 114.7
D 12 227 1998476 18483.87 435 423 108.1
D 7 223 1307113 12088.11 435 423 108.1
D 8 195 584920 5407.15 435 423 108.1

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