ASTROSAT CZTI

Data Quality Report

Orbit 57598

Creation date: 2026-05-21T16:13:10.566434
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_070T08_9000006576_57598cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57598cztM0_level2_quad_clean.evt
Size (bytes)560,617,92086,852,160
Size534.6 MB 82.8 MB
Events in quadrant A3,283,779622,342
Events in quadrant B3,303,718669,128
Events in quadrant C8,956,410365,046
Events in quadrant D4,720,931536,241

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142561
B0139052
C0307691
D0184411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62691382.201308%
B6269871.387781%
C6269252340.245653%
D62694397.002712%

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 7379 6270 81 81 1.10% 1.29%
B 7379 6270 29 29 0.39% 0.46%
C 7378 6268 2434 2434 32.99% 38.83%
D 7379 6269 375 375 5.08% 5.98%

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 7 160 547435 3251.8 685 670 168.1
A 3 14 56500 332.04 685 670 168.1
A 4 3 21523 124.02 685 670 168.1
B 0 63 285625 1994.17 673 650 142.9
B 10 247 88852 617.21 673 650 142.9
B 10 16 50509 348.9 673 650 142.9
C 15 208 6156068 48536.91 460 456 126.8
C 1 12 454903 3583.31 460 456 126.8
C 15 224 208894 1643.53 460 456 126.8
D 8 160 956840 5189.4 654 626 184.3
D 2 249 319038 1728.03 654 626 184.3
D 15 142 257674 1395.01 654 626 184.3

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