ASTROSAT CZTI

Data Quality Report

Orbit 09199

Creation date: 2024-06-27T15:42:36.675546
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/AS1C02_042T02_9000001284_09199cztM0_level2.evt modeM0/AS1C02_042T02_9000001284_09199cztM0_level2_quad_clean.evt
Size (bytes)1,427,379,840223,827,840
Size1.3 GB 213.5 MB
Events in quadrant A13,613,6211,377,756
Events in quadrant B8,923,1251,417,339
Events in quadrant C9,328,2801,375,389
Events in quadrant D10,112,3201,331,500

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0536117
B0385323
C0405463
D0430035

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185344062.190569%
B185351911.030483%
C185353661.974643%
D185345452.940542%

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 20271 18535 71 71 0.35% 0.38%
B 20271 18535 11 11 0.05% 0.06%
C 20270 18534 166 166 0.82% 0.90%
D 20271 18535 385 385 1.90% 2.08%

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 8 5 4594678 10195.36 2191 2143 450.5
A 1 162 319458 704.43 2191 2143 450.5
A 1 178 72200 155.53 2191 2143 450.5
B 0 214 65850 150.27 2207 2151 423.9
B 0 213 62827 143.14 2207 2151 423.9
B 12 111 46062 103.59 2207 2151 423.9
C 4 254 1035446 2099.73 2116 2126 492.1
C 13 61 16288 28.78 2116 2126 492.1
C 8 128 13913 23.95 2116 2126 492.1
D 4 95 1031858 1820.73 2104 2054 565.6
D 9 64 377352 663.54 2104 2054 565.6
D 7 71 320696 563.37 2104 2054 565.6

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