ASTROSAT CZTI

Data Quality Report

Orbit 00695

Creation date: 2024-06-27T14:01:40.906439
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_147T02_9000000098_00695cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00695cztM0_level2_quad_clean.evt
Size (bytes)1,074,890,88057,144,960
Size1.0 GB 54.5 MB
Events in quadrant A7,465,847323,828
Events in quadrant B8,052,651331,784
Events in quadrant C9,577,259314,829
Events in quadrant D7,030,134309,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267575
B0285121
C0330021
D0255121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458100.154847%
B6458100.154847%
C6458140.216785%
D6458390.603902%

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 7713 6459 126 126 1.63% 1.95%
B 7713 6459 218 218 2.83% 3.38%
C 7713 6459 400 400 5.19% 6.19%
D 7713 6459 161 161 2.09% 2.49%

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 15 171 26685 53.24 1928 1944 464.7
A 15 69 16086 30.43 1928 1944 464.7
A 13 17 16028 30.3 1928 1944 464.7
B 7 221 209645 427.64 2039 2047 485.5
B 0 220 57166 113.54 2039 2047 485.5
B 5 191 35985 69.91 2039 2047 485.5
C 3 127 1056852 2054.87 1848 1916 513.4
C 3 31 259557 501.85 1848 1916 513.4
C 3 15 244030 471.6 1848 1916 513.4
D 6 226 168611 307.92 1757 1816 541.7
D 1 4 115003 208.95 1757 1816 541.7
D 0 25 98919 179.26 1757 1816 541.7

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