ASTROSAT CZTI

Data Quality Report

Orbit 36174

Creation date: 2022-07-19T02:16:05.637739
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/AS1T05_009T03_9000005164_36174cztM0_level2.evt modeM0/AS1T05_009T03_9000005164_36174cztM0_level2_quad_clean.evt
Size (bytes)144,446,40020,018,880
Size137.8 MB 19.1 MB
Events in quadrant A891,544120,301
Events in quadrant B1,273,792121,777
Events in quadrant C1,072,791123,085
Events in quadrant D1,018,774115,786

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036102
B049121
C041901
D040821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168820.118483%
B1688855.035545%
C1688271.599526%
D1688392.310427%

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 3781 1689 0 0 0.00% 0.00%
B 3781 1689 49 49 1.30% 2.90%
C 3781 1689 21 21 0.56% 1.24%
D 3781 1689 30 30 0.79% 1.78%

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 10 83 71812 1675.68 207 203 42.7
A 8 144 9626 220.5 207 203 42.7
A 9 143 6680 151.56 207 203 42.7
B 4 171 211630 5221.56 205 200 40.5
B 5 172 175701 4334.24 205 200 40.5
B 0 213 33131 813.28 205 200 40.5
C 15 208 103239 2135.08 203 204 48.3
C 15 214 78773 1628.1 203 204 48.3
C 0 10 71511 1477.62 203 204 48.3
D 13 249 122095 2466.9 199 193 49.4
D 10 118 44760 901.89 199 193 49.4
D 13 171 18610 372.7 199 193 49.4

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