ASTROSAT CZTI

Data Quality Report

Orbit 31044

Creation date: 2024-06-27T20:22:41.229313
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_071T63_9000004486_31044cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31044cztM0_level2_quad_clean.evt
Size (bytes)550,111,680101,776,320
Size524.6 MB 97.1 MB
Events in quadrant A3,326,922676,926
Events in quadrant B5,437,504665,022
Events in quadrant C3,516,007641,808
Events in quadrant D3,922,929628,429

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142012
B0209172
C0146562
D0158136

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6741681.008752%
B67411672.477377%
C67411081.602136%
D67401031.528190%

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 7706 6741 0 0 0.00% 0.00%
B 7706 6741 24 24 0.31% 0.36%
C 7706 6741 0 0 0.00% 0.00%
D 7705 6740 43 43 0.56% 0.64%

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 12716 68.86 861 842 172.4
A 3 137 8759 45.91 861 842 172.4
A 0 226 7337 37.67 861 842 172.4
B 6 159 1844038 11200.36 842 818 164.6
B 4 171 70082 420.88 842 818 164.6
B 0 190 69270 415.95 842 818 164.6
C 3 233 149117 777.08 818 824 190.8
C 14 238 131101 682.68 818 824 190.8
C 1 16 23103 116.75 818 824 190.8
D 8 195 562261 2812.69 829 806 199.6
D 7 69 84997 421.77 829 806 199.6
D 2 250 60491 299.0 829 806 199.6

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