ASTROSAT CZTI

Data Quality Report

Orbit 20191205_A08_007T01_9000003362_level2

Creation date: 2025-12-06T16:04:12.113371
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/AS1A08_007T01_9000003362cztM0_level2.fits modeM0/AS1A08_007T01_9000003362cztM0_level2_quad_clean.evt
Size (bytes)1,976,817,6001,732,544,640
Size1.8 GB 1.6 GB
Events in quadrant A12,428,47410,329,790
Events in quadrant B11,746,27510,281,422
Events in quadrant C11,929,5409,753,904
Events in quadrant D10,107,0128,452,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040580
B040640
C040580
D040580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04151100
B04386130
C04171590
D05883320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04580
B04580
C04580
D04580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19932717310.868422%
B19928827041.356830%
C19930029191.464626%
D199254154327.744888%

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 302715 199471 0 0 0.00% 0.00%
B 302715 199437 0 0 0.00% 0.00%
C 302715 199431 0 0 0.00% 0.00%
D 302715 199241 0 0 0.00% 0.00%

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 0 29 11951 11.46 3237 3050 776.8
A 7 110 10030 8.98 3237 3050 776.8
A 0 30 9359 8.12 3237 3050 776.8
B 2 9 9478 10.84 3119 2989 598.6
B 2 8 7932 8.26 3119 2989 598.6
B 5 128 7658 7.8 3119 2989 598.6
C 12 241 8256 6.66 3158 2960 795.0
C 3 126 8078 6.44 3158 2960 795.0
C 2 191 8013 6.36 3158 2960 795.0
D 3 14 7281 6.07 2898 2658 761.7
D 10 189 7140 5.88 2898 2658 761.7
D 6 231 7136 5.88 2898 2658 761.7

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