ASTROSAT CZTI

Data Quality Report

Orbit 20928

Creation date: 2024-06-27T18:21:19.067103
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_025T17_9000003084_20928cztM0_level2.evt modeM0/AS1A05_025T17_9000003084_20928cztM0_level2_quad_clean.evt
Size (bytes)115,513,92035,308,800
Size110.2 MB 33.7 MB
Events in quadrant A820,829239,893
Events in quadrant B862,695248,339
Events in quadrant C847,121238,166
Events in quadrant D861,671230,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033571
B034871
C034531
D035271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1519161.053325%
B1519161.053325%
C1519291.909151%
D1519191.250823%

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 1519 1519 6 6 0.39% 0.39%
B 1519 1519 0 0 0.00% 0.00%
C 1519 1519 0 0 0.00% 0.00%
D 1519 1519 7 7 0.46% 0.46%

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 15 174 21609 504.17 207 203 42.5
A 0 226 1847 38.72 207 203 42.5
A 3 137 1556 31.87 207 203 42.5
B 0 230 14692 359.66 212 208 40.3
B 3 64 4498 106.53 212 208 40.3
B 12 111 4453 105.41 212 208 40.3
C 14 238 33769 690.71 207 209 48.6
C 9 54 2874 54.85 207 209 48.6
C 13 61 1443 25.4 207 209 48.6
D 9 1 35385 702.24 204 198 50.1
D 7 38 18951 374.26 204 198 50.1
D 1 20 15080 297.01 204 198 50.1

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