ASTROSAT CZTI

Data Quality Report

Orbit 52152

Creation date: 2025-05-20T04:16:02.075792
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_011T07_9000006470_52152cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52152cztM0_level2_quad_clean.evt
Size (bytes)1,049,572,80087,831,360
Size1001.0 MB 83.8 MB
Events in quadrant A6,124,317678,566
Events in quadrant B7,676,796651,154
Events in quadrant C9,501,068511,350
Events in quadrant D14,979,929303,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234341
B0279292
C0333221
D0496411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73913244.383710%
B7390124816.887686%
C7390211628.633288%
D7390426657.726658%

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 7700 7392 239 239 3.10% 3.23%
B 7700 7392 880 880 11.43% 11.90%
C 7700 7391 1853 1853 24.06% 25.07%
D 7700 7390 4248 4248 55.17% 57.48%

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 3 1283949 6659.77 769 748 192.7
A 14 254 505673 2620.54 769 748 192.7
A 11 3 375575 1945.34 769 748 192.7
B 12 32 1898390 12380.53 728 703 153.3
B 10 254 1611232 10507.11 728 703 153.3
B 4 206 313305 2039.42 728 703 153.3
C 15 224 4745228 25564.91 666 659 185.6
C 7 1 524583 2823.03 666 659 185.6
C 15 193 293750 1579.25 666 659 185.6
D 6 42 8165396 50957.86 563 540 160.2
D 15 94 2353997 14688.21 563 540 160.2
D 12 17 969424 6046.92 563 540 160.2

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