ASTROSAT CZTI

Data Quality Report

Orbit 37356

Creation date: 2024-06-27T21:38:55.974448
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/AS1C07_014T01_9000005314_37356cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37356cztM0_level2_quad_clean.evt
Size (bytes)567,852,48085,150,080
Size541.5 MB 81.2 MB
Events in quadrant A3,123,491563,742
Events in quadrant B3,671,998551,864
Events in quadrant C3,064,068560,599
Events in quadrant D6,954,372505,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128113
B0145602
C0124462
D0245752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5665681.200353%
B56653005.295675%
C5665781.376876%
D566588515.622242%

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 7249 5666 37 37 0.51% 0.65%
B 7249 5666 180 180 2.48% 3.18%
C 7249 5666 45 45 0.62% 0.79%
D 7249 5666 773 773 10.66% 13.64%

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 10 83 298666 2170.95 669 658 137.3
A 15 237 116137 841.25 669 658 137.3
A 9 143 82278 594.59 669 658 137.3
B 5 255 512245 4039.41 656 641 126.7
B 5 172 349890 2757.53 656 641 126.7
B 0 190 67539 528.2 656 641 126.7
C 15 214 237144 1527.21 654 659 154.8
C 14 254 152708 981.93 654 659 154.8
C 0 10 103237 662.44 654 659 154.8
D 12 235 2317720 15226.73 620 603 152.2
D 12 227 1114788 7321.77 620 603 152.2
D 2 249 607203 3986.22 620 603 152.2

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