ASTROSAT CZTI

Data Quality Report

Orbit 10844

Creation date: 2024-06-27T16:04:27.348616
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/AS1A03_086T01_9000001568_10844cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10844cztM0_level2_quad_clean.evt
Size (bytes)617,506,56086,483,520
Size588.9 MB 82.5 MB
Events in quadrant A6,256,802485,143
Events in quadrant B4,531,661566,587
Events in quadrant C3,096,841576,640
Events in quadrant D4,374,426535,583

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342
B01342
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023381390
B017781193
C01359695
D017480157

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6487116117.897333%
B65194787.332413%
C6530440.673813%
D65152714.159632%

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 7193 6550 797 797 11.08% 12.17%
B 7193 6571 220 220 3.06% 3.35%
C 7193 6573 4 4 0.06% 0.06%
D 7193 6574 203 203 2.82% 3.09%

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 8 5 3321352 22596.14 716 702 147.0
A 13 251 127305 861.5 716 702 147.0
A 3 1 19298 126.54 716 702 147.0
B 4 239 1391121 9367.63 776 760 148.4
B 0 219 40017 264.5 776 760 148.4
B 0 214 30739 201.99 776 760 148.4
C 15 48 52033 283.16 778 785 181.0
C 14 234 11564 59.56 778 785 181.0
C 13 61 5749 27.43 778 785 181.0
D 14 34 1122713 6069.33 763 743 184.9
D 13 104 91209 489.38 763 743 184.9
D 12 233 88796 476.33 763 743 184.9

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