ASTROSAT CZTI

Data Quality Report

Orbit 15414

Creation date: 2024-06-27T17:08:12.235487
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/AS1T02_076T01_9000002274_15414cztM0_level2.evt modeM0/AS1T02_076T01_9000002274_15414cztM0_level2_quad_clean.evt
Size (bytes)485,827,200118,820,160
Size463.3 MB 113.3 MB
Events in quadrant A3,321,557810,185
Events in quadrant B3,270,598814,487
Events in quadrant C3,824,933789,379
Events in quadrant D3,887,489764,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136842
B0134151
C0154951
D0157061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60211312.175718%
B6021931.544594%
C60211171.943199%
D60211402.325195%

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 7297 6022 28 28 0.38% 0.46%
B 7297 6022 3 3 0.04% 0.05%
C 7297 6022 42 42 0.58% 0.70%
D 7297 6022 43 43 0.59% 0.71%

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 14 237 70326 436.94 797 783 159.2
A 13 248 70010 434.95 797 783 159.2
A 14 238 65892 409.08 797 783 159.2
B 7 220 40004 269.12 786 772 145.8
B 0 219 23000 152.48 786 772 145.8
B 0 189 21366 141.27 786 772 145.8
C 3 233 616748 3557.98 755 757 173.1
C 3 9 142594 819.26 755 757 173.1
C 7 247 105649 605.86 755 757 173.1
D 13 122 650465 3510.62 767 745 185.1
D 2 33 186145 1001.77 767 745 185.1
D 2 120 27905 146.75 767 745 185.1

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