ASTROSAT CZTI

Data Quality Report

Orbit 13769

Creation date: 2024-06-27T16:45:51.668734
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/AS1G08_062T01_9000002038_13769cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13769cztM0_level2_quad_clean.evt
Size (bytes)304,194,24048,553,920
Size290.1 MB 46.3 MB
Events in quadrant A2,251,951285,654
Events in quadrant B2,263,829285,761
Events in quadrant C2,006,297301,781
Events in quadrant D2,390,209287,020

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095330
B095600
C088260
D099910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4401791.795047%
B4401370.840718%
C440100.000000%
D4401551.249716%

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 4402 4402 57 57 1.29% 1.29%
B 4402 4402 25 25 0.57% 0.57%
C 4402 4402 0 0 0.00% 0.00%
D 4402 4402 43 43 0.98% 0.98%

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 9 143 218792 2074.87 510 499 105.2
A 0 23 32530 304.45 510 499 105.2
A 15 69 21967 204.05 510 499 105.2
B 3 64 150769 1527.9 506 492 98.4
B 0 219 91800 928.35 506 492 98.4
B 3 209 21276 211.32 506 492 98.4
C 3 233 58114 488.41 499 503 118.0
C 13 61 3677 26.91 499 503 118.0
C 12 4 1572 9.06 499 503 118.0
D 1 52 305932 2503.44 498 483 122.0
D 10 157 128933 1052.77 498 483 122.0
D 13 249 36217 292.87 498 483 122.0

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