ASTROSAT CZTI

Data Quality Report

Orbit 00674

Creation date: 2024-06-27T14:01:24.191444
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/AS1P01_141T01_9000000096_00674cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00674cztM0_level2_quad_clean.evt
Size (bytes)2,020,792,320138,147,840
Size1.9 GB 131.7 MB
Events in quadrant A14,896,954849,520
Events in quadrant B14,985,565860,216
Events in quadrant C13,849,078861,868
Events in quadrant D16,677,972783,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02710
B02710
C02710
D02710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08067527700
B08092527741
C07609126250
D08885330443

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376130
B0376130
C0376130
D0376130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11978630.525964%
B12029430.357469%
C12071170.140833%
D118568246.950067%

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 13943 11983 616 616 4.42% 5.14%
B 13943 12033 446 446 3.20% 3.71%
C 13943 12075 266 266 1.91% 2.20%
D 13943 11862 1872 1872 13.43% 15.78%

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 15 17 87065 98.24 3793 3760 847.9
A 13 17 46054 49.88 3793 3760 847.9
A 14 79 41022 43.94 3793 3760 847.9
B 0 220 232471 251.9 3826 3853 907.6
B 5 191 63015 65.19 3826 3853 907.6
B 0 230 39769 39.57 3826 3853 907.6
C 2 192 52333 49.72 3500 3636 979.4
C 9 52 48390 45.69 3500 3636 979.4
C 15 241 24675 21.48 3500 3636 979.4
D 12 237 3133672 3079.71 3244 3377 1016.4
D 1 4 601972 588.92 3244 3377 1016.4
D 13 221 209659 202.95 3244 3377 1016.4

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