ASTROSAT CZTI

Data Quality Report

Orbit 55174

Creation date: 2025-12-09T14:43:02.373615
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_022T16_9000006532_55174cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55174cztM0_level2_quad_clean.evt
Size (bytes)470,191,68096,592,320
Size448.4 MB 92.1 MB
Events in quadrant A5,781,864593,432
Events in quadrant B3,109,126687,755
Events in quadrant C4,484,865590,694
Events in quadrant D3,491,950571,428

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220900
B0146260
C0183270
D0154820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69106569.493488%
B6910630.911722%
C69112493.602952%
D6911270.390682%

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 6910 6910 583 583 8.44% 8.44%
B 6910 6910 24 24 0.35% 0.35%
C 6911 6911 200 200 2.89% 2.89%
D 6911 6911 27 27 0.39% 0.39%

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 78 1964166 11258.14 704 686 174.4
A 0 8 763060 4371.28 704 686 174.4
A 3 45 112468 640.93 704 686 174.4
B 5 185 93322 597.35 716 690 155.1
B 2 249 85420 546.39 716 690 155.1
B 0 182 57146 364.06 716 690 155.1
C 9 38 591379 3072.18 692 684 192.3
C 15 199 292805 1519.31 692 684 192.3
C 10 22 254209 1318.57 692 684 192.3
D 11 129 578328 2961.62 700 670 195.0
D 2 249 68841 349.51 700 670 195.0
D 5 173 53669 271.72 700 670 195.0

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