ASTROSAT CZTI

Data Quality Report

Orbit 58634

Creation date: 2026-07-30T09:32:23.495403
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_004T06_9000006594_58634cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58634cztM0_level2_quad_clean.evt
Size (bytes)704,448,000118,676,160
Size671.8 MB 113.2 MB
Events in quadrant A4,650,384808,770
Events in quadrant B4,396,419866,448
Events in quadrant C10,638,740596,442
Events in quadrant D5,731,651731,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196930
B0190460
C0375140
D0231190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8500861.011765%
B85011411.658628%
C8501235327.679097%
D85012412.834961%

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 8500 8500 67 67 0.79% 0.79%
B 8501 8501 36 36 0.42% 0.42%
C 8501 8501 1998 1998 23.50% 23.50%
D 8501 8501 208 208 2.45% 2.45%

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 10 251 435699 1873.03 941 914 232.1
A 12 114 268196 1151.43 941 914 232.1
A 10 17 213130 914.21 941 914 232.1
B 8 128 214555 1066.43 935 899 200.3
B 6 255 170798 848.03 935 899 200.3
B 4 171 128295 635.88 935 899 200.3
C 15 164 5393133 24927.19 792 786 216.3
C 15 217 1279718 5912.12 792 786 216.3
C 13 3 455132 2100.3 792 786 216.3
D 11 129 1021330 3953.53 911 867 258.1
D 8 240 534283 2066.59 911 867 258.1
D 2 249 302423 1168.3 911 867 258.1

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