ASTROSAT CZTI

Data Quality Report

Orbit 52527

Creation date: 2025-06-25T16:19:18.925264
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_011T06_9000006478_52527cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52527cztM0_level2_quad_clean.evt
Size (bytes)928,149,120133,416,000
Size885.2 MB 127.2 MB
Events in quadrant A4,535,602947,977
Events in quadrant B5,985,0441,002,423
Events in quadrant C8,382,730813,042
Events in quadrant D14,680,270583,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212982
B0250112
C0321533
D0506212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9991660.660595%
B99912972.972675%
C9991108910.899810%
D9991339033.930537%

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 12351 9993 30 30 0.24% 0.30%
B 12351 9993 103 103 0.83% 1.03%
C 12351 9993 843 843 6.83% 8.44%
D 12351 9992 2940 2940 23.80% 29.42%

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 13 248 93620 362.36 1030 1006 255.6
A 15 174 85156 329.25 1030 1006 255.6
A 3 14 60576 233.08 1030 1006 255.6
B 10 128 483646 2255.14 1019 986 214.0
B 12 32 329441 1534.65 1019 986 214.0
B 7 0 272169 1267.05 1019 986 214.0
C 15 224 1412432 5481.74 929 918 257.5
C 2 12 514705 1995.34 929 918 257.5
C 4 5 508329 1970.58 929 918 257.5
D 15 93 6205532 26481.11 804 766 234.3
D 6 42 2131703 9094.55 804 766 234.3
D 2 120 534649 2278.54 804 766 234.3

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