ASTROSAT CZTI

Data Quality Report

Orbit 20190418_A05_075T10_9000002842_level2

Creation date: 2025-11-29T11:12:34.751662
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/AS1A05_075T10_9000002842cztM0_level2.fits modeM0/AS1A05_075T10_9000002842cztM0_level2_quad_clean.evt
Size (bytes)103,207,68061,508,160
Size98.4 MB 58.7 MB
Events in quadrant A643,066311,023
Events in quadrant B625,140317,156
Events in quadrant C648,442310,800
Events in quadrant D570,212283,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201490
B0203200
C0225030
D0224030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92211371.485739%
B92211611.746015%
C92212422.624444%
D92211601.735170%

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 11771 9220 0 0 0.00% 0.00%
B 11771 9220 0 0 0.00% 0.00%
C 11771 9219 0 0 0.00% 0.00%
D 11771 9220 0 0 0.00% 0.00%

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 0 29 608 10.54 167 158 42.7
A 9 19 484 7.63 167 158 42.7
A 7 110 482 7.59 167 158 42.7
B 2 9 500 10.13 165 159 33.7
B 3 17 417 7.67 165 159 33.7
B 5 128 415 7.61 165 159 33.7
C 1 81 487 7.29 171 163 44.5
C 3 126 474 7.0 171 163 44.5
C 1 80 470 6.91 171 163 44.5
D 10 190 445 6.84 162 149 43.3
D 4 246 431 6.52 162 149 43.3
D 3 14 430 6.49 162 149 43.3

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