ASTROSAT CZTI

Data Quality Report

Orbit 52265

Creation date: 2025-07-21T19:51:34.874905
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/AS1C09_011T05_9000006474_52265cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52265cztM0_level2_quad_clean.evt
Size (bytes)699,122,88071,562,240
Size666.7 MB 68.2 MB
Events in quadrant A3,695,090551,330
Events in quadrant B6,405,941506,871
Events in quadrant C11,344,571198,420
Events in quadrant D3,977,216499,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150571
B0231021
C0376821
D0158561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58773275.564063%
B5877118020.078271%
C5877403368.623447%
D58782574.372235%

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 7007 5878 231 231 3.30% 3.93%
B 7007 5878 762 762 10.87% 12.96%
C 7006 5877 3220 3220 45.96% 54.79%
D 7008 5879 170 170 2.43% 2.89%

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 4 249 496538 3269.62 606 593 151.7
A 13 248 146226 960.12 606 593 151.7
A 11 3 110695 725.87 606 593 151.7
B 12 32 1586119 13379.02 552 534 118.5
B 10 254 956389 8065.42 552 534 118.5
B 0 216 362781 3056.61 552 534 118.5
C 15 158 7757952 75123.51 373 369 103.3
C 15 224 1040186 10069.46 373 369 103.3
C 4 5 232181 2244.84 373 369 103.3
D 8 176 822243 4835.73 593 565 169.9
D 11 176 160472 941.08 593 565 169.9
D 7 96 116639 683.11 593 565 169.9

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