ASTROSAT CZTI

Data Quality Report

Orbit 41125

Creation date: 2024-06-27T22:24:46.538250
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/AS1A12_052T04_9000005602_41125cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41125cztM0_level2_quad_clean.evt
Size (bytes)802,529,280182,891,520
Size765.4 MB 174.4 MB
Events in quadrant A6,119,2541,266,984
Events in quadrant B7,469,6051,208,639
Events in quadrant C5,857,8551,234,369
Events in quadrant D9,416,0071,072,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247194
B0295593
C0239243
D0352173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10899200.183503%
B108998928.184237%
C108991511.385448%
D1089910729.835765%

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 16249 10902 7 7 0.04% 0.06%
B 16249 10901 631 631 3.88% 5.79%
C 16249 10902 118 118 0.73% 1.08%
D 16249 10902 903 903 5.56% 8.28%

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 959471 3780.02 1254 1227 253.5
A 14 235 153240 599.65 1254 1227 253.5
A 12 189 95783 373.0 1254 1227 253.5
B 0 245 2630143 11587.1 1197 1164 226.9
B 5 255 52671 227.01 1197 1164 226.9
B 0 229 44729 192.01 1197 1164 226.9
C 15 214 466888 1665.34 1213 1223 279.6
C 14 254 362583 1292.32 1213 1223 279.6
C 0 10 222397 790.98 1213 1223 279.6
D 2 249 3085284 10705.37 1191 1158 288.1
D 13 249 825576 2861.65 1191 1158 288.1
D 2 16 782042 2710.54 1191 1158 288.1

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