ASTROSAT CZTI

Data Quality Report

Orbit 11381

Creation date: 2024-06-27T16:12:07.247831
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/AS1A04_022T02_9000001662_11381cztM0_level2.evt modeM0/AS1A04_022T02_9000001662_11381cztM0_level2_quad_clean.evt
Size (bytes)696,116,160105,649,920
Size663.9 MB 100.8 MB
Events in quadrant A4,660,050656,768
Events in quadrant B4,899,942662,293
Events in quadrant C3,599,905729,159
Events in quadrant D7,393,180607,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191613
B0198722
C0162322
D0274582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78232593.310750%
B78234455.688355%
C7823380.485747%
D7823101713.000128%

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 8213 7826 112 112 1.36% 1.43%
B 8213 7826 183 183 2.23% 2.34%
C 8213 7826 0 0 0.00% 0.00%
D 8213 7825 786 786 9.57% 10.04%

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 8 5 1120007 6073.92 902 880 184.3
A 8 15 17109 88.08 902 880 184.3
A 8 6 12847 64.95 902 880 184.3
B 4 239 1145827 6624.82 902 878 172.8
B 3 64 90680 519.61 902 878 172.8
B 3 189 50896 289.41 902 878 172.8
C 13 61 6557 26.1 919 924 215.8
C 7 238 4487 16.51 919 924 215.8
C 14 234 4187 15.12 919 924 215.8
D 14 34 1301424 6341.65 850 824 205.1
D 1 52 1206167 5877.18 850 824 205.1
D 10 253 1018059 4959.98 850 824 205.1

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