ASTROSAT CZTI

Data Quality Report

Orbit 20160703_G05_245T01_9000000532_level2

Creation date: 2025-11-03T15:48:15.177349
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/AS1G05_245T01_9000000532cztM0_level2.fits modeM0/AS1G05_245T01_9000000532cztM0_level2_quad_clean.evt
Size (bytes)107,009,280113,454,720
Size102.1 MB 108.2 MB
Events in quadrant A650,648702,964
Events in quadrant B625,440697,427
Events in quadrant C645,174665,014
Events in quadrant D558,612609,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230920
B0236800
C0226210
D0249140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110011461.327152%
B110011581.436233%
C110011281.163531%
D110012692.445232%

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 13211 11000 0 0 0.00% 0.00%
B 13210 10999 0 0 0.00% 0.00%
C 13210 10999 0 0 0.00% 0.00%
D 13211 10997 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 29 654 10.92 168 157 45.5
A 14 188 643 10.68 168 157 45.5
A 7 110 614 10.04 168 157 45.5
B 2 9 538 10.75 165 157 35.4
B 5 128 477 9.03 165 157 35.4
B 12 226 465 8.69 165 157 35.4
C 1 80 513 7.46 170 158 47.6
C 1 81 480 6.77 170 158 47.6
C 9 188 452 6.18 170 158 47.6
D 11 82 501 7.97 159 144 44.8
D 4 160 428 6.34 159 144 44.8
D 3 14 409 5.91 159 144 44.8

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