ASTROSAT CZTI

Data Quality Report

Orbit 11262

Creation date: 2024-06-27T16:10:32.153439
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/AS1C03_012T01_9000001642_11262cztM0_level2.evt modeM0/AS1C03_012T01_9000001642_11262cztM0_level2_quad_clean.evt
Size (bytes)507,522,24096,888,960
Size484.0 MB 92.4 MB
Events in quadrant A3,933,510644,807
Events in quadrant B3,797,520664,535
Events in quadrant C2,888,680639,381
Events in quadrant D4,358,153580,727

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154942
B0150952
C0122872
D0167942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57891502.591121%
B57892434.197616%
C5789190.328209%
D57892714.681292%

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 7084 5790 86 86 1.21% 1.49%
B 7084 5790 89 89 1.26% 1.54%
C 7084 5790 5 5 0.07% 0.09%
D 7084 5790 193 193 2.72% 3.33%

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 357896 2396.99 735 724 149.0
A 13 251 324876 2175.39 735 724 149.0
A 14 238 207793 1389.65 735 724 149.0
B 4 239 721748 5219.63 740 726 138.1
B 15 204 64505 461.71 740 726 138.1
B 11 51 62490 447.12 740 726 138.1
C 5 239 66694 399.02 719 728 165.3
C 9 204 10064 56.47 719 728 165.3
C 12 4 8582 47.51 719 728 165.3
D 8 195 576209 3478.21 692 677 165.5
D 10 253 324011 1954.06 692 677 165.5
D 12 157 181234 1091.19 692 677 165.5

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