ASTROSAT CZTI

Data Quality Report

Orbit 31545

Creation date: 2024-06-27T20:29:47.420494
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/AS1A10_056T01_9000004598_31545cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31545cztM0_level2_quad_clean.evt
Size (bytes)958,164,480156,591,360
Size913.8 MB 149.3 MB
Events in quadrant A5,464,316998,915
Events in quadrant B8,833,0931,008,135
Events in quadrant C6,432,118968,033
Events in quadrant D7,493,353952,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240742
B0356752
C0266842
D0306722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117781931.638648%
B117783412.895228%
C117785454.627271%
D117792171.842262%

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 12868 11778 0 0 0.00% 0.00%
B 12868 11778 15 15 0.12% 0.13%
C 12868 11778 94 94 0.73% 0.80%
D 12869 11780 57 57 0.44% 0.48%

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 19233 62.89 1416 1386 283.8
A 3 137 14751 47.09 1416 1386 283.8
A 0 226 11970 37.3 1416 1386 283.8
B 6 159 3114354 11624.57 1400 1363 267.8
B 4 80 81526 299.35 1400 1363 267.8
B 10 247 58767 214.36 1400 1363 267.8
C 10 22 763812 2440.74 1342 1349 312.4
C 14 238 216540 688.85 1342 1349 312.4
C 0 10 73191 229.98 1342 1349 312.4
D 8 195 2017671 6182.96 1367 1326 326.1
D 12 233 189664 577.52 1367 1326 326.1
D 12 218 53380 159.62 1367 1326 326.1

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