ASTROSAT CZTI

Data Quality Report

Orbit 53643

Creation date: 2025-08-28T13:11:47.418016
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_022T05_9000006504_53643cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53643cztM0_level2_quad_clean.evt
Size (bytes)1,061,026,56076,835,520
Size1011.9 MB 73.3 MB
Events in quadrant A10,747,094402,772
Events in quadrant B6,485,136645,637
Events in quadrant C11,850,505337,847
Events in quadrant D9,677,566473,283

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365432
B0237722
C0396922
D0333942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6690294544.020927%
B6690102115.261584%
C6690345051.569507%
D6690175726.263079%

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 8821 6678 2611 2611 29.60% 39.10%
B 8822 6678 637 637 7.22% 9.54%
C 8822 6675 3035 3035 34.40% 45.47%
D 8822 6679 1549 1549 17.56% 23.19%

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 6701214 45012.9 603 590 148.9
A 15 174 745954 5007.15 603 590 148.9
A 4 95 273142 1830.93 603 590 148.9
B 4 206 2063571 13175.16 728 703 156.6
B 5 172 573553 3658.69 728 703 156.6
B 7 0 478501 3051.61 728 703 156.6
C 1 241 7298871 48548.23 533 526 150.3
C 15 224 1892342 12584.27 533 526 150.3
C 13 3 260150 1727.01 533 526 150.3
D 8 176 3524622 18862.17 654 627 186.8
D 10 172 2733288 14626.56 654 627 186.8
D 13 153 158185 843.33 654 627 186.8

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