ASTROSAT CZTI

Data Quality Report

Orbit 16690

Creation date: 2024-06-27T17:26:17.052689
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_225T01_9000002470_16690cztM0_level2.evt modeM0/AS1A05_225T01_9000002470_16690cztM0_level2_quad_clean.evt
Size (bytes)291,643,20035,418,240
Size278.1 MB 33.8 MB
Events in quadrant A2,602,650213,050
Events in quadrant B1,778,250222,581
Events in quadrant C1,654,300213,546
Events in quadrant D2,586,955203,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097692
B071541
C067151
D098341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A307830910.038986%
B30781264.093567%
C30781274.126056%
D30781715.555556%

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 4314 3080 72 72 1.67% 2.34%
B 4314 3080 8 8 0.19% 0.26%
C 4314 3080 0 0 0.00% 0.00%
D 4314 3080 33 33 0.76% 1.07%

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 984774 11509.53 413 404 85.5
A 9 143 18873 215.94 413 404 85.5
A 3 1 5942 64.75 413 404 85.5
B 15 35 83955 1025.74 419 409 81.4
B 0 229 14817 176.89 419 409 81.4
B 15 222 12704 150.95 419 409 81.4
C 14 238 62615 648.55 405 408 95.9
C 3 233 8235 81.6 405 408 95.9
C 7 247 4364 41.24 405 408 95.9
D 2 16 478551 4756.06 408 396 100.5
D 1 52 380560 3781.37 408 396 100.5
D 5 222 143155 1419.98 408 396 100.5

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