ASTROSAT CZTI

Data Quality Report

Orbit 40325

Creation date: 2024-06-27T22:14:56.534033
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_056T02_9000005538_40325cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40325cztM0_level2_quad_clean.evt
Size (bytes)467,910,720112,259,520
Size446.2 MB 107.1 MB
Events in quadrant A3,905,119765,344
Events in quadrant B3,475,457788,967
Events in quadrant C3,345,504754,947
Events in quadrant D6,070,551619,714

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157777
B0147593
C0140882
D0227432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6740901.335312%
B6741370.548880%
C6742260.385642%
D674285612.696529%

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 8025 6742 60 60 0.75% 0.89%
B 8025 6743 21 21 0.26% 0.31%
C 8025 6743 18 18 0.22% 0.27%
D 8024 6742 867 867 10.81% 12.86%

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 10 83 559147 3663.66 747 732 152.4
A 13 248 378510 2478.53 747 732 152.4
A 6 10 25390 161.78 747 732 152.4
B 5 255 184029 1268.41 748 728 144.5
B 0 245 116941 804.17 748 728 144.5
B 7 202 74812 512.65 748 728 144.5
C 15 214 286117 1639.97 741 746 174.0
C 14 254 145366 831.1 741 746 174.0
C 0 10 19956 110.4 741 746 174.0
D 12 227 2738981 15990.04 695 676 171.3
D 12 233 225317 1311.77 695 676 171.3
D 1 47 191468 1114.11 695 676 171.3

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