ASTROSAT CZTI

Data Quality Report

Orbit 25736

Creation date: 2024-06-27T19:20:55.670486
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/AS1A09_008T06_9000003748_25736cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25736cztM0_level2_quad_clean.evt
Size (bytes)521,386,560101,767,680
Size497.2 MB 97.1 MB
Events in quadrant A3,422,820667,857
Events in quadrant B3,561,606688,656
Events in quadrant C3,534,616667,153
Events in quadrant D4,861,281635,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141660
B0146560
C0145490
D0184870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6046831.372808%
B60461021.687066%
C60461452.398280%
D60463155.210056%

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 7451 6046 9 9 0.12% 0.15%
B 7451 6046 4 4 0.05% 0.07%
C 7451 6046 1 1 0.01% 0.02%
D 7451 6046 198 198 2.66% 3.27%

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 13 41538 233.52 875 862 174.2
A 13 254 10565 55.71 875 862 174.2
A 5 168 9181 47.76 875 862 174.2
B 15 222 35714 213.98 879 861 162.9
B 0 190 22493 132.81 879 861 162.9
B 5 172 19989 117.43 879 861 162.9
C 14 238 141217 705.93 863 875 198.8
C 3 233 25656 124.65 863 875 198.8
C 13 61 5957 25.56 863 875 198.8
D 1 52 1200203 5791.39 860 840 207.1
D 7 80 178565 858.18 860 840 207.1
D 4 214 65647 312.93 860 840 207.1

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