ASTROSAT CZTI

Data Quality Report

Orbit 04442

Creation date: 2024-06-27T14:42:29.357910
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/AS1SLEW_01234_9000000555_04442cztM0_level2.evt modeM0/AS1SLEW_01234_9000000555_04442cztM0_level2_quad_clean.evt
Size (bytes)96,963,8404,011,840
Size92.5 MB 3.8 MB
Events in quadrant A704,8483,829
Events in quadrant B730,6563,827
Events in quadrant C688,3473,615
Events in quadrant D713,1003,601

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029162
B029901
C028921
D030471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141510.070671%
B141520.141343%
C141510.070671%
D1415130.918728%

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 1415 1415 0 0 0.00% 0.00%
B 1415 1415 0 0 0.00% 0.00%
C 1415 1415 0 0 0.00% 0.00%
D 1415 1415 11 11 0.78% 0.78%

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 12 194 1825 42.5 183 180 38.7
A 0 226 1787 41.52 183 180 38.7
A 13 254 538 9.25 183 180 38.7
B 4 48 12732 341.39 185 181 36.8
B 12 111 3234 83.04 185 181 36.8
B 4 200 2656 67.32 185 181 36.8
C 9 247 2326 50.73 175 176 42.4
C 9 16 1615 33.95 175 176 42.4
C 13 61 1397 28.81 175 176 42.4
D 8 112 30164 710.28 171 166 42.2
D 13 239 23960 563.39 171 166 42.2
D 4 95 6174 142.26 171 166 42.2

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