ASTROSAT CZTI

Data Quality Report

Orbit 00739

Creation date: 2024-06-27T14:02:17.666947
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/AS1P01_010T01_9000000108_00739cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00739cztM0_level2_quad_clean.evt
Size (bytes)1,216,480,32095,564,160
Size1.1 GB 91.1 MB
Events in quadrant A7,755,906623,462
Events in quadrant B10,821,037615,577
Events in quadrant C7,662,509612,768
Events in quadrant D10,156,708572,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278470
B0369310
C0275440
D0349830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6737170.252338%
B67373064.542081%
C673650.074228%
D67364716.992280%

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 7882 6738 182 182 2.31% 2.70%
B 7882 6738 1419 1419 18.00% 21.06%
C 7881 6737 124 124 1.57% 1.84%
D 7881 6737 1513 1513 19.20% 22.46%

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 10 230 45774 91.53 1997 2010 478.1
A 15 171 30278 59.12 1997 2010 478.1
A 11 79 9421 15.5 1997 2010 478.1
B 8 38 2597630 5348.76 2100 2106 485.3
B 7 221 176661 359.72 2100 2106 485.3
B 0 220 25572 48.36 2100 2106 485.3
C 15 241 41842 74.81 1927 1995 532.6
C 9 52 37970 67.54 1927 1995 532.6
C 3 111 29194 51.07 1927 1995 532.6
D 13 25 2073353 3699.21 1824 1885 560.0
D 6 226 446697 794.34 1824 1885 560.0
D 7 207 324521 576.16 1824 1885 560.0

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