ASTROSAT CZTI

Data Quality Report

Orbit 17754

Creation date: 2024-06-27T17:40:30.194650
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_070T06_9000002642_17754cztM0_level2.evt modeM0/AS1T03_070T06_9000002642_17754cztM0_level2_quad_clean.evt
Size (bytes)538,407,360114,370,560
Size513.5 MB 109.1 MB
Events in quadrant A3,548,484743,973
Events in quadrant B3,948,473745,389
Events in quadrant C4,359,184710,462
Events in quadrant D3,917,621719,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159831
B0168571
C0180241
D0170421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7837911.161159%
B78381361.735137%
C78382653.380965%
D78381131.441694%

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 8287 7837 0 0 0.00% 0.00%
B 8288 7839 23 23 0.28% 0.29%
C 8288 7839 103 103 1.24% 1.31%
D 8288 7838 32 32 0.39% 0.41%

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 15 174 41590 219.88 910 887 185.1
A 0 226 8106 38.99 910 887 185.1
A 3 137 6838 32.14 910 887 185.1
B 7 220 279138 1612.77 903 881 172.5
B 0 219 35705 201.84 903 881 172.5
B 0 229 32469 183.08 903 881 172.5
C 4 254 738764 3627.2 864 869 203.4
C 14 238 132408 646.59 864 869 203.4
C 5 218 57394 277.85 864 869 203.4
D 5 222 293471 1384.68 886 866 211.3
D 10 70 90719 425.21 886 866 211.3
D 2 234 37242 172.14 886 866 211.3

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