ASTROSAT CZTI

Data Quality Report

Orbit 11823

Creation date: 2024-06-27T16:18:45.502825
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_022T07_9000001748_11823cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11823cztM0_level2_quad_clean.evt
Size (bytes)588,588,48094,576,320
Size561.3 MB 90.2 MB
Events in quadrant A3,287,963622,202
Events in quadrant B7,516,433588,964
Events in quadrant C2,968,613623,370
Events in quadrant D3,622,261586,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140523
B0267982
C0130832
D0152602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6344510.803909%
B6344137721.705549%
C6344190.299496%
D63441782.805801%

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 7565 6346 3 3 0.04% 0.05%
B 7565 6346 1112 1112 14.70% 17.52%
C 7565 6346 0 0 0.00% 0.00%
D 7565 6346 153 153 2.02% 2.41%

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 1 162 121760 777.91 769 754 155.6
A 1 178 60293 382.76 769 754 155.6
A 1 161 53745 340.66 769 754 155.6
B 10 16 2227559 16456.81 722 704 135.3
B 3 64 1154119 8523.92 722 704 135.3
B 4 239 994265 7342.57 722 704 135.3
C 1 16 6315 31.25 758 763 177.7
C 13 61 5569 27.05 758 763 177.7
C 0 207 4004 18.24 758 763 177.7
D 9 85 293574 1651.25 742 722 177.4
D 1 52 225006 1264.63 742 722 177.4
D 10 253 102790 575.51 742 722 177.4

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