ASTROSAT CZTI

Data Quality Report

Orbit 57175

Creation date: 2026-04-23T05:08:00.757422
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/AS1A14_070T08_9000006568_57175cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57175cztM0_level2_quad_clean.evt
Size (bytes)540,434,88085,576,320
Size515.4 MB 81.6 MB
Events in quadrant A5,779,130553,871
Events in quadrant B3,116,085636,318
Events in quadrant C6,869,618440,551
Events in quadrant D3,742,612513,233

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215032
B0139422
C0249682
D0151512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64085849.113608%
B64091071.669527%
C6409153123.888282%
D64091081.685130%

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 9080 6693 646 646 7.11% 9.65%
B 9081 6694 55 55 0.61% 0.82%
C 9080 6693 1266 1266 13.94% 18.92%
D 9081 6694 75 75 0.83% 1.12%

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 3 14 3128918 18621.43 674 658 168.0
A 10 251 17051 97.58 674 658 168.0
A 13 254 10421 58.12 674 658 168.0
B 10 16 154901 1065.84 681 657 144.7
B 2 249 95254 653.67 681 657 144.7
B 5 185 40122 272.7 681 657 144.7
C 15 224 4454793 27767.24 577 570 160.4
C 14 67 41354 254.24 577 570 160.4
C 14 254 36827 226.02 577 570 160.4
D 5 113 428739 2297.9 651 620 186.3
D 8 240 160603 858.7 651 620 186.3
D 2 249 126761 677.05 651 620 186.3

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