ASTROSAT CZTI

Data Quality Report

Orbit 15985

Creation date: 2024-06-27T17:16:07.257168
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/AS1T02_104T01_9000002356_15985cztM0_level2.evt modeM0/AS1T02_104T01_9000002356_15985cztM0_level2_quad_clean.evt
Size (bytes)34,277,76010,944,000
Size32.7 MB 10.4 MB
Events in quadrant A241,78870,274
Events in quadrant B262,65172,173
Events in quadrant C258,46869,998
Events in quadrant D230,85468,842

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011970
B012130
C011990
D011960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59800.000000%
B59810.167224%
C59820.334448%
D59800.000000%

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 599 599 0 0 0.00% 0.00%
B 599 599 0 0 0.00% 0.00%
C 599 599 0 0 0.00% 0.00%
D 599 599 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 0 226 535 31.99 62 61 14.8
A 3 137 456 26.66 62 61 14.8
A 12 194 400 22.88 62 61 14.8
B 4 173 7367 493.41 64 63 14.8
B 0 189 3442 228.26 64 63 14.8
B 12 111 1502 97.21 64 63 14.8
C 14 238 9580 577.55 62 62 16.5
C 10 22 3395 202.24 62 62 16.5
C 3 233 1005 57.22 62 62 16.5
D 2 234 2685 154.55 61 59 17.0
D 14 226 558 29.37 61 59 17.0
D 2 120 551 28.96 61 59 17.0

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