ASTROSAT CZTI

Data Quality Report

Orbit 20170614_A03_062T04_9000001298_level2

Creation date: 2025-11-14T14:02:58.927479
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/AS1A03_062T04_9000001298cztM0_level2.fits modeM0/AS1A03_062T04_9000001298cztM0_level2_quad_clean.evt
Size (bytes)176,212,800136,584,000
Size168.0 MB 130.3 MB
Events in quadrant A1,040,462729,489
Events in quadrant B1,030,930738,470
Events in quadrant C1,051,508704,216
Events in quadrant D909,448658,760

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0512470
B0398750
C0396270
D0399300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03880
C03830
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0380
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188763521.864802%
B189491880.992137%
C189661120.590530%
D189481820.960524%

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 23126 19073 0 0 0.00% 0.00%
B 23126 19096 0 0 0.00% 0.00%
C 23125 19099 0 0 0.00% 0.00%
D 23125 19081 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 1065 11.68 270 252 69.6
A 7 110 912 9.48 270 252 69.6
A 0 30 798 7.84 270 252 69.6
B 2 9 880 10.96 271 257 56.8
B 14 254 717 8.09 271 257 56.8
B 5 128 703 7.85 271 257 56.8
C 1 80 807 7.33 277 257 75.0
C 1 81 798 7.21 277 257 75.0
C 12 241 785 7.04 277 257 75.0
D 7 3 709 6.59 259 234 72.0
D 6 231 642 5.66 259 234 72.0
D 7 5 635 5.56 259 234 72.0

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