ASTROSAT CZTI

Data Quality Report

Orbit 23655

Creation date: 2024-06-27T18:57:15.225254
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/AS1A07_091T04_9000003492_23655cztM0_level2.evt modeM0/AS1A07_091T04_9000003492_23655cztM0_level2_quad_clean.evt
Size (bytes)447,664,32091,224,000
Size426.9 MB 87.0 MB
Events in quadrant A3,112,463576,087
Events in quadrant B3,486,314590,111
Events in quadrant C3,138,379571,295
Events in quadrant D3,362,193555,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137281
B0146361
C0137331
D0147231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67391011.498739%
B67391301.929070%
C67401091.617211%
D67391211.795519%

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 7239 6739 0 0 0.00% 0.00%
B 7239 6739 14 14 0.19% 0.21%
C 7240 6740 0 0 0.00% 0.00%
D 7239 6739 46 46 0.64% 0.68%

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 13 254 10671 60.35 806 786 163.8
A 3 137 7330 39.95 806 786 163.8
A 0 226 6979 37.81 806 786 163.8
B 0 189 208230 1341.29 802 779 154.7
B 0 229 68283 436.45 802 779 154.7
B 3 64 30067 189.36 802 779 154.7
C 14 238 122402 674.39 769 772 180.4
C 7 247 16383 86.55 769 772 180.4
C 13 61 5355 25.41 769 772 180.4
D 9 85 251311 1311.63 780 757 191.0
D 1 52 56205 290.27 780 757 191.0
D 13 189 48526 250.07 780 757 191.0

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