ASTROSAT CZTI

Data Quality Report

Orbit 31408

Creation date: 2024-06-27T20:27:58.470362
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/AS1A10_094T26_9000004558_31408cztM0_level2.evt modeM0/AS1A10_094T26_9000004558_31408cztM0_level2_quad_clean.evt
Size (bytes)237,536,64062,029,440
Size226.5 MB 59.2 MB
Events in quadrant A1,463,517423,688
Events in quadrant B2,249,387427,803
Events in quadrant C1,522,407416,513
Events in quadrant D1,763,267406,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060321
B087651
C062651
D070301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2847170.597120%
B2847461.615736%
C2847622.177731%
D2847240.842993%

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 4007 2848 0 0 0.00% 0.00%
B 4007 2848 0 0 0.00% 0.00%
C 4007 2848 0 0 0.00% 0.00%
D 4007 2848 12 12 0.30% 0.42%

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 13 254 4669 56.02 379 372 76.7
A 3 137 3658 42.84 379 372 76.7
A 0 226 3205 36.93 379 372 76.7
B 6 159 716720 10014.27 374 365 71.5
B 4 80 35102 485.61 374 365 71.5
B 0 190 22007 302.54 374 365 71.5
C 14 238 71234 826.82 365 367 85.7
C 14 254 16001 182.41 365 367 85.7
C 2 114 6585 72.55 365 367 85.7
D 8 195 213015 2422.39 368 358 87.8
D 12 218 88653 1005.77 368 358 87.8
D 2 250 28874 324.83 368 358 87.8

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