ASTROSAT CZTI

Data Quality Report

Orbit 23782

Creation date: 2024-06-27T18:58:39.587426
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/AS1T03_180T01_9000003524_23782cztM0_level2.evt modeM0/AS1T03_180T01_9000003524_23782cztM0_level2_quad_clean.evt
Size (bytes)494,591,04087,678,720
Size471.7 MB 83.6 MB
Events in quadrant A3,406,077567,223
Events in quadrant B3,685,176580,255
Events in quadrant C3,423,376543,158
Events in quadrant D4,045,289533,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140292
B0148912
C0139222
D0159732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6173851.376964%
B61731422.300340%
C61731061.717155%
D61732574.163292%

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 7548 6173 0 0 0.00% 0.00%
B 7548 6173 29 29 0.38% 0.47%
C 7548 6173 0 0 0.00% 0.00%
D 7548 6174 170 170 2.25% 2.75%

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 11308 59.98 884 869 174.0
A 0 226 7979 40.85 884 869 174.0
A 3 137 7021 35.35 884 869 174.0
B 3 64 170695 1047.16 880 865 162.2
B 0 189 36911 222.26 880 865 162.2
B 12 111 17989 105.59 880 865 162.2
C 14 238 136345 706.61 837 847 191.8
C 4 175 12589 61.23 837 847 191.8
C 7 247 9418 44.7 837 847 191.8
D 1 52 429334 2169.82 829 808 197.5
D 5 222 237868 1200.34 829 808 197.5
D 8 195 81290 407.52 829 808 197.5

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