ASTROSAT CZTI

Data Quality Report

Orbit 53156

Creation date: 2025-07-28T17:17:07.486957
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/AS1A13_003T01_9000006486_53156cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_53156cztM0_level2_quad_clean.evt
Size (bytes)767,122,56094,343,040
Size731.6 MB 90.0 MB
Events in quadrant A5,134,089649,177
Events in quadrant B7,154,265651,441
Events in quadrant C11,272,208440,603
Events in quadrant D4,269,244605,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204300
B0264330
C0386040
D0179520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73213955.395438%
B732297813.357006%
C7322255934.949467%
D73221081.475007%

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 7321 7321 369 369 5.04% 5.04%
B 7322 7322 724 724 9.89% 9.89%
C 7322 7322 2407 2407 32.87% 32.87%
D 7322 7322 119 119 1.63% 1.63%

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 12 3 1022904 5540.45 737 717 184.5
A 0 8 482579 2611.79 737 717 184.5
A 3 62 157152 847.91 737 717 184.5
B 10 254 3470701 22505.44 716 693 154.2
B 2 249 401359 2598.6 716 693 154.2
B 4 81 132748 856.47 716 693 154.2
C 1 241 3927731 22921.09 617 611 171.3
C 15 157 1793947 10467.01 617 611 171.3
C 15 224 1620599 9455.25 617 611 171.3
D 8 176 315233 1546.34 717 684 203.4
D 12 3 208847 1023.34 717 684 203.4
D 10 172 164208 803.89 717 684 203.4

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