ASTROSAT CZTI

Data Quality Report

Orbit 39235

Creation date: 2024-06-27T22:02:07.265922
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/AS1A12_083T01_9000005448_39235cztM0_level2.fits modeM0/AS1A12_083T01_9000005448_39235cztM0_level2_quad_clean.evt
Size (bytes)641,243,52084,628,800
Size611.5 MB 80.7 MB
Events in quadrant A4,090,621652,268
Events in quadrant B2,982,150658,256
Events in quadrant C3,087,156633,290
Events in quadrant D13,120,405208,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159982
B0128451
C0129341
D0429401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58741572.672795%
B58741091.855635%
C5874510.868233%
D5874425672.454886%

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 7157 5875 125 125 1.75% 2.13%
B 7157 5875 59 59 0.82% 1.00%
C 7157 5875 42 42 0.59% 0.71%
D 7157 5873 3630 3630 50.72% 61.81%

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 13 248 754653 5633.87 653 641 133.8
A 10 83 421426 3144.04 653 641 133.8
A 3 80 320244 2388.03 653 641 133.8
B 5 172 357103 2792.63 649 631 127.6
B 0 190 32365 248.61 649 631 127.6
B 0 213 21372 162.49 649 631 127.6
C 15 214 244561 1612.5 639 642 151.3
C 9 187 242397 1598.2 639 642 151.3
C 3 233 49721 324.45 639 642 151.3
D 12 235 10066592 93743.23 437 426 107.4
D 2 249 811541 7553.67 437 426 107.4
D 12 227 405226 3769.78 437 426 107.4

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