ASTROSAT CZTI

Data Quality Report

Orbit 11942

Creation date: 2024-06-27T16:20:21.939642
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/AS1A04_124T01_9000001766_11942cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11942cztM0_level2_quad_clean.evt
Size (bytes)507,936,960121,645,440
Size484.4 MB 116.0 MB
Events in quadrant A3,286,959820,815
Events in quadrant B3,786,884834,649
Events in quadrant C2,828,348827,548
Events in quadrant D5,056,598764,838

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140083
B0154602
C0128302
D0193692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6249751.200192%
B62492814.496719%
C6249350.560090%
D62492363.776604%

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 7485 6251 1 1 0.01% 0.02%
B 7485 6250 139 139 1.86% 2.22%
C 7485 6251 0 0 0.00% 0.00%
D 7485 6250 95 95 1.27% 1.52%

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 1 162 137003 916.04 732 716 148.8
A 1 178 73882 491.78 732 716 148.8
A 1 161 64627 429.57 732 716 148.8
B 4 239 567938 4149.36 734 717 136.7
B 0 85 192349 1401.84 734 717 136.7
B 15 204 68522 496.01 734 717 136.7
C 13 61 5433 28.43 724 727 165.5
C 14 234 3199 14.93 724 727 165.5
C 3 202 1817 6.59 724 727 165.5
D 1 52 1045773 6226.66 705 683 167.8
D 8 195 533244 3173.01 705 683 167.8
D 13 122 452394 2691.3 705 683 167.8

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