ASTROSAT CZTI

Data Quality Report

Orbit 54883

Creation date: 2025-11-20T00:49:08.046754
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_039T06_9000006526_54883cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54883cztM0_level2_quad_clean.evt
Size (bytes)524,949,12097,387,200
Size500.6 MB 92.9 MB
Events in quadrant A3,950,987646,352
Events in quadrant B3,509,286682,626
Events in quadrant C5,795,512585,095
Events in quadrant D5,642,503555,876

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163601
B0154782
C02214023
D0216347

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68771301.890359%
B68772233.242693%
C68715157.495270%
D68754897.112727%

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 7072 6879 28 28 0.40% 0.41%
B 7071 6878 55 55 0.78% 0.80%
C 7072 6876 407 407 5.76% 5.92%
D 7072 6878 349 349 4.93% 5.07%

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 796761 4270.48 756 738 186.4
A 13 248 57795 306.1 756 738 186.4
A 8 246 50714 268.11 756 738 186.4
B 5 185 278572 1735.48 743 715 160.1
B 10 247 185884 1156.56 743 715 160.1
B 2 249 50483 310.85 743 715 160.1
C 12 252 2314441 11687.69 725 720 198.0
C 6 223 279413 1407.81 725 720 198.0
C 14 254 108846 546.19 725 720 198.0
D 2 172 647068 3150.27 725 694 205.2
D 6 46 501875 2442.63 725 694 205.2
D 15 94 388268 1888.94 725 694 205.2

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