ASTROSAT CZTI

Data Quality Report

Orbit 15208

Creation date: 2024-06-27T17:05:19.431006
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/AS1T02_071T01_9000002246_15208cztM0_level2.evt modeM0/AS1T02_071T01_9000002246_15208cztM0_level2_quad_clean.evt
Size (bytes)187,545,60047,275,200
Size178.9 MB 45.1 MB
Events in quadrant A1,195,942322,317
Events in quadrant B1,588,592314,493
Events in quadrant C1,591,164320,513
Events in quadrant D1,146,334308,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049882
B062711
C065001
D049021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2296281.219512%
B22961888.188153%
C2296210.914634%
D2296210.914634%

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 3418 2297 0 0 0.00% 0.00%
B 3418 2297 88 88 2.57% 3.83%
C 3418 2297 0 0 0.00% 0.00%
D 3418 2298 3 3 0.09% 0.13%

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 12 189 25514 403.82 304 297 62.4
A 0 226 2741 39.14 304 297 62.4
A 12 194 2399 33.66 304 297 62.4
B 3 64 229781 3991.42 293 286 57.5
B 10 245 207793 3609.0 293 286 57.5
B 12 111 5970 98.86 293 286 57.5
C 3 233 413346 6075.23 291 292 68.0
C 7 247 41940 612.56 291 292 68.0
C 13 61 2080 26.3 291 292 68.0
D 10 70 8998 120.29 295 285 72.4
D 2 234 8635 115.28 295 285 72.4
D 7 38 7160 94.91 295 285 72.4

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