ASTROSAT CZTI

Data Quality Report

Orbit 20191224_T03_170T01_9000003388_level2

Creation date: 2025-12-06T23:02:36.407925
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/AS1T03_170T01_9000003388cztM0_level2.fits modeM0/AS1T03_170T01_9000003388cztM0_level2_quad_clean.evt
Size (bytes)698,673,600624,044,160
Size666.3 MB 595.1 MB
Events in quadrant A4,316,9083,707,464
Events in quadrant B4,141,8343,708,397
Events in quadrant C4,255,8203,528,003
Events in quadrant D3,603,8443,114,341

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014360
B014360
C014360
D014360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470180
B01487280
C01506930
D02050720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A705788021.136331%
B705789161.297855%
C7057812071.710165%
D7057840655.759585%

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 82144 70578 0 0 0.00% 0.00%
B 82144 70578 0 0 0.00% 0.00%
C 82144 70578 0 0 0.00% 0.00%
D 82144 70504 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 4077 11.04 1123 1059 273.3
A 7 110 3490 8.89 1123 1059 273.3
A 0 30 3169 7.72 1123 1059 273.3
B 2 9 3366 10.8 1097 1048 214.5
B 2 8 2835 8.33 1097 1048 214.5
B 3 17 2750 7.93 1097 1048 214.5
C 1 81 3199 7.53 1122 1052 285.3
C 1 80 3152 7.36 1122 1052 285.3
C 3 234 3082 7.11 1122 1052 285.3
D 3 14 2595 6.08 1030 940 272.1
D 10 189 2573 6.0 1030 940 272.1
D 6 38 2507 5.76 1030 940 272.1

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