ASTROSAT CZTI

Data Quality Report

Orbit 00768

Creation date: 2024-06-27T14:02:40.784636
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_010T01_9000000108_00768cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00768cztM0_level2_quad_clean.evt
Size (bytes)1,049,256,000104,500,800
Size1000.6 MB 99.7 MB
Events in quadrant A7,853,069680,806
Events in quadrant B8,411,410694,415
Events in quadrant C7,858,743667,054
Events in quadrant D7,206,030652,725

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281110
B0297670
C0281430
D0261830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6738190.281983%
B6738190.281983%
C6738560.831107%
D6738250.371030%

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 7898 6739 218 218 2.76% 3.23%
B 7898 6739 307 307 3.89% 4.56%
C 7898 6739 221 221 2.80% 3.28%
D 7898 6739 139 139 1.76% 2.06%

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 15 233 102561 209.97 2004 2017 478.8
A 15 249 19984 37.52 2004 2017 478.8
A 13 17 19395 36.29 2004 2017 478.8
B 7 221 119461 235.15 2145 2148 498.9
B 0 220 81704 159.47 2145 2148 498.9
B 5 191 18912 33.6 2145 2148 498.9
C 10 17 166428 306.42 1938 2009 536.6
C 15 241 32917 57.6 1938 2009 536.6
C 3 111 25964 44.64 1938 2009 536.6
D 10 85 72502 124.29 1844 1906 568.0
D 1 4 67709 115.85 1844 1906 568.0
D 12 188 47542 80.35 1844 1906 568.0

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