ASTROSAT CZTI

Data Quality Report

Orbit 20233

Creation date: 2024-06-27T18:12:46.707394
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/AS1T03_123T01_9000003000_20233cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20233cztM0_level2_quad_clean.evt
Size (bytes)183,015,36047,185,920
Size174.5 MB 45.0 MB
Events in quadrant A1,282,699323,689
Events in quadrant B1,525,640327,160
Events in quadrant C1,287,451303,441
Events in quadrant D1,283,731303,956

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051291
B059971
C051531
D052121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2360431.822034%
B2360692.923729%
C2360783.305085%
D2360351.483051%

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 3540 2361 0 0 0.00% 0.00%
B 3540 2361 0 0 0.00% 0.00%
C 3540 2361 0 0 0.00% 0.00%
D 3540 2361 3 3 0.08% 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 0 226 2740 35.25 333 327 68.5
A 3 137 2442 30.9 333 327 68.5
A 12 194 2276 28.47 333 327 68.5
B 10 245 221159 3425.92 330 322 64.5
B 12 111 7418 110.08 330 322 64.5
B 0 214 6873 101.63 330 322 64.5
C 14 238 50429 667.27 316 318 75.1
C 3 233 3464 41.89 316 318 75.1
C 9 54 2309 26.51 316 318 75.1
D 1 52 47013 598.66 322 313 78.0
D 2 120 11420 142.38 322 313 78.0
D 2 234 11336 141.31 322 313 78.0

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