ASTROSAT CZTI

Data Quality Report

Orbit 20388

Creation date: 2024-06-27T18:14:45.580247
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/AS1A05_205T01_9000003012_20388cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20388cztM0_level2_quad_clean.evt
Size (bytes)241,223,04050,402,880
Size230.0 MB 48.1 MB
Events in quadrant A1,622,315324,268
Events in quadrant B1,949,407323,670
Events in quadrant C1,613,538316,101
Events in quadrant D1,875,494309,024

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072111
B080501
C072091
D079811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A357170.196024%
B3571752.100252%
C3571210.588071%
D3571250.700084%

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 3571 3571 0 0 0.00% 0.00%
B 3571 3571 50 50 1.40% 1.40%
C 3571 3571 0 0 0.00% 0.00%
D 3571 3571 15 15 0.42% 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 6 16 4660 49.43 419 408 86.0
A 0 226 3677 38.0 419 408 86.0
A 3 137 3413 34.93 419 408 86.0
B 7 220 291126 3607.23 411 401 80.6
B 0 197 18392 223.23 411 401 80.6
B 0 198 10239 122.07 411 401 80.6
C 14 238 62651 656.29 397 398 94.9
C 13 61 2807 25.4 397 398 94.9
C 7 220 1741 14.16 397 398 94.9
D 1 52 106958 1071.86 405 393 99.4
D 13 153 83427 835.18 405 393 99.4
D 1 20 63448 634.23 405 393 99.4

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