ASTROSAT CZTI

Data Quality Report

Orbit 32976

Creation date: 2024-06-27T20:44:08.387693
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_003T01_9000004754_32976cztM0_level2.evt modeM0/AS1C07_003T01_9000004754_32976cztM0_level2_quad_clean.evt
Size (bytes)401,906,88063,460,800
Size383.3 MB 60.5 MB
Events in quadrant A2,398,617401,189
Events in quadrant B3,090,315408,954
Events in quadrant C2,668,068385,130
Events in quadrant D3,668,704369,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103243
B0122502
C0110382
D0143372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509160.117855%
B50911763.457081%
C50911072.101748%
D5091511.001768%

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 7213 5092 1 1 0.01% 0.02%
B 7213 5092 126 126 1.75% 2.47%
C 7213 5092 43 43 0.60% 0.84%
D 7213 5092 50 50 0.69% 0.98%

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 8726 66.02 616 605 123.0
A 9 143 8103 60.95 616 605 123.0
A 3 137 5470 39.55 616 605 123.0
B 5 172 559466 4737.38 615 601 118.0
B 0 197 73223 615.6 615 601 118.0
B 0 230 20653 169.98 615 601 118.0
C 0 10 245225 1762.98 598 605 138.8
C 14 67 40359 286.51 598 605 138.8
C 1 241 24572 172.73 598 605 138.8
D 8 195 650114 4193.46 591 580 154.9
D 12 227 401692 2589.62 591 580 154.9
D 13 153 82780 530.69 591 580 154.9

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