ASTROSAT CZTI

Data Quality Report

Orbit 27268

Creation date: 2024-06-27T19:38:14.975189
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_243T01_9000003918_27268cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27268cztM0_level2_quad_clean.evt
Size (bytes)532,676,16092,148,480
Size508.0 MB 87.9 MB
Events in quadrant A3,308,060607,999
Events in quadrant B5,038,491590,885
Events in quadrant C3,264,638578,869
Events in quadrant D4,097,139576,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138600
B0193610
C0137200
D0164000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6256460.735294%
B62574857.751319%
C6257771.230622%
D62571883.004635%

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 7451 6257 1 1 0.01% 0.02%
B 7452 6258 301 301 4.04% 4.81%
C 7452 6258 0 0 0.00% 0.00%
D 7452 6258 96 96 1.29% 1.53%

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 13 254 8858 46.98 856 841 170.6
A 3 137 7585 39.52 856 841 170.6
A 0 226 7341 38.09 856 841 170.6
B 10 245 1643104 10506.2 827 808 156.3
B 3 64 137563 874.86 827 808 156.3
B 12 111 18375 112.38 827 808 156.3
C 14 238 130415 692.94 804 812 187.0
C 13 61 5398 24.52 804 812 187.0
C 3 233 2651 9.83 804 812 187.0
D 1 52 899716 4474.79 810 791 200.9
D 12 233 83300 410.72 810 791 200.9
D 2 250 29155 141.19 810 791 200.9

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