ASTROSAT CZTI

Data Quality Report

Orbit 24840

Creation date: 2024-06-27T19:10:29.409528
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/AS1A08_003T03_9000003632_24840cztM0_level2.evt modeM0/AS1A08_003T03_9000003632_24840cztM0_level2_quad_clean.evt
Size (bytes)485,976,96070,292,160
Size463.5 MB 67.0 MB
Events in quadrant A3,496,662431,827
Events in quadrant B3,479,261438,557
Events in quadrant C3,390,309407,013
Events in quadrant D3,913,176400,190

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139893
B0139532
C0136282
D0155542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458410.634871%
B6458651.006504%
C6458731.130381%
D64581432.214308%

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 7698 6459 1 1 0.01% 0.02%
B 7698 6459 2 2 0.03% 0.03%
C 7698 6459 0 0 0.00% 0.00%
D 7698 6459 97 97 1.26% 1.50%

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 6 16 77142 431.34 887 874 176.8
A 13 254 9448 48.49 887 874 176.8
A 3 137 7854 39.48 887 874 176.8
B 12 111 19863 113.04 879 861 168.1
B 11 111 18536 105.14 879 861 168.1
B 14 111 17289 97.73 879 861 168.1
C 14 238 134396 696.69 830 836 191.7
C 7 247 12351 60.07 830 836 191.7
C 13 61 5845 26.13 830 836 191.7
D 5 222 473707 2365.82 832 809 199.9
D 1 52 204767 1020.36 832 809 199.9
D 8 195 75706 374.7 832 809 199.9

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