ASTROSAT CZTI

Data Quality Report

Orbit 54749

Creation date: 2025-11-11T02:04:55.755640
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_103T01_9000006524_54749cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54749cztM0_level2_quad_clean.evt
Size (bytes)478,264,32097,493,760
Size456.1 MB 93.0 MB
Events in quadrant A3,796,044648,154
Events in quadrant B4,675,600666,946
Events in quadrant C3,916,191622,865
Events in quadrant D4,809,353559,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154302
B0183562
C0161582
D0187902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65192273.482129%
B65195688.712993%
C65191782.730480%
D65194917.531830%

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 7659 6519 87 87 1.14% 1.33%
B 7659 6519 398 398 5.20% 6.11%
C 7659 6519 85 85 1.11% 1.30%
D 7659 6519 409 409 5.34% 6.27%

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 435446 2387.17 739 720 182.1
A 4 249 191807 1049.29 739 720 182.1
A 0 8 100809 549.61 739 720 182.1
B 2 249 1505008 9884.36 715 689 152.2
B 7 252 106154 692.97 715 689 152.2
B 5 185 76246 496.46 715 689 152.2
C 9 38 229555 1173.18 713 708 195.1
C 13 3 185346 946.54 713 708 195.1
C 1 16 163538 834.74 713 708 195.1
D 11 129 592939 2988.36 701 669 198.2
D 6 239 512191 2580.94 701 669 198.2
D 3 12 334748 1685.63 701 669 198.2

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