ASTROSAT CZTI

Data Quality Report

Orbit 20170214_A02_165T03_9000001032_level2

Creation date: 2025-11-09T15:34:50.312651
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/AS1A02_165T03_9000001032cztM0_level2.fits modeM0/AS1A02_165T03_9000001032cztM0_level2_quad_clean.evt
Size (bytes)142,704,000141,523,200
Size136.1 MB 135.0 MB
Events in quadrant A845,186820,408
Events in quadrant B823,096829,789
Events in quadrant C846,718811,338
Events in quadrant D725,454742,590

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322600
B0337340
C0322670
D0361290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15673860.548714%
B156732661.697186%
C15673860.548714%
D156733432.188477%

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 17538 15673 0 0 0.00% 0.00%
B 17538 15673 0 0 0.00% 0.00%
C 17538 15673 0 0 0.00% 0.00%
D 17538 15674 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 29 862 11.22 220 205 58.5
A 7 110 697 8.4 220 205 58.5
A 0 30 682 8.15 220 205 58.5
B 2 9 723 11.2 216 205 46.3
B 14 254 558 7.63 216 205 46.3
B 5 232 554 7.54 216 205 46.3
C 1 80 643 7.04 223 206 62.1
C 12 241 635 6.91 223 206 62.1
C 1 81 595 6.27 223 206 62.1
D 10 189 537 6.07 206 186 57.8
D 6 231 524 5.85 206 186 57.8
D 1 19 519 5.76 206 186 57.8

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