ASTROSAT CZTI

Data Quality Report

Orbit 24795

Creation date: 2024-06-27T19:09:57.500594
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/AS1T03_197T01_9000003626_24795cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24795cztM0_level2_quad_clean.evt
Size (bytes)459,645,12078,903,360
Size438.4 MB 75.2 MB
Events in quadrant A3,127,529510,248
Events in quadrant B4,172,121493,485
Events in quadrant C3,117,583486,589
Events in quadrant D3,098,754483,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125171
B0159771
C0125501
D0127311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5956450.755541%
B59574497.537351%
C5957651.091153%
D5957370.621118%

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 7266 5957 0 0 0.00% 0.00%
B 7267 5958 247 247 3.40% 4.15%
C 7267 5958 0 0 0.00% 0.00%
D 7267 5958 18 18 0.25% 0.30%

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 9372 53.22 810 798 161.1
A 0 226 7028 38.67 810 798 161.1
A 3 137 7007 38.54 810 798 161.1
B 3 64 1049968 7305.18 763 747 143.6
B 0 189 126181 873.33 763 747 143.6
B 12 111 17101 113.86 763 747 143.6
C 14 238 122541 699.46 753 759 174.1
C 10 91 44483 251.13 753 759 174.1
C 7 247 13397 72.59 753 759 174.1
D 1 52 83714 449.25 773 750 184.7
D 8 195 33364 176.61 773 750 184.7
D 13 138 23839 125.03 773 750 184.7

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