ASTROSAT CZTI

Data Quality Report

Orbit 31919

Creation date: 2024-06-27T20:34:11.660187
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/AS1A10_123T09_9000004654_31919cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31919cztM0_level2_quad_clean.evt
Size (bytes)889,093,44086,016,960
Size847.9 MB 82.0 MB
Events in quadrant A3,142,579676,124
Events in quadrant B6,326,796626,799
Events in quadrant C5,662,408603,933
Events in quadrant D11,379,222265,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129281
B0228661
C0213531
D0381081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6168811.313230%
B616973111.849570%
C61693595.819420%
D6169368459.717945%

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 7388 6169 0 0 0.00% 0.00%
B 7389 6170 565 565 7.65% 9.16%
C 7389 6170 66 66 0.89% 1.07%
D 7389 6170 3549 3549 48.03% 57.52%

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 18682 111.82 808 792 160.0
A 13 254 12570 73.62 808 792 160.0
A 3 137 7181 39.93 808 792 160.0
B 6 159 1732405 12285.09 754 737 141.0
B 10 245 678825 4810.6 754 737 141.0
B 5 172 548808 3888.22 754 737 141.0
C 3 233 2112620 12211.52 749 754 172.9
C 0 10 479514 2768.35 749 754 172.9
C 14 238 121855 700.25 749 754 172.9
D 12 33 8284305 70634.07 498 485 117.3
D 8 195 842512 7179.75 498 485 117.3
D 13 249 145455 1236.12 498 485 117.3

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