ASTROSAT CZTI

Data Quality Report

Orbit 26735

Creation date: 2024-06-27T19:32:15.641555
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/AS1T03_223T01_9000003850_26735cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26735cztM0_level2_quad_clean.evt
Size (bytes)514,082,88091,198,080
Size490.3 MB 87.0 MB
Events in quadrant A3,579,728600,040
Events in quadrant B3,500,483601,806
Events in quadrant C3,253,539574,796
Events in quadrant D4,825,310562,710

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142920
B0138320
C0129150
D0182920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6044721.191264%
B60451111.836228%
C6045901.488834%
D60443896.436135%

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 7359 6045 0 0 0.00% 0.00%
B 7360 6046 25 25 0.34% 0.41%
C 7360 6046 2 2 0.03% 0.03%
D 7359 6045 261 261 3.55% 4.32%

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 13 342819 2052.41 840 825 166.6
A 13 254 9625 52.81 840 825 166.6
A 0 226 7462 39.83 840 825 166.6
B 10 246 241532 1582.79 818 801 152.1
B 3 112 32886 210.96 818 801 152.1
B 12 111 17760 111.5 818 801 152.1
C 14 238 129340 712.43 786 792 180.4
C 3 233 34307 185.74 786 792 180.4
C 15 208 27651 148.86 786 792 180.4
D 1 52 1256577 5957.27 788 774 210.8
D 12 233 335648 1588.57 788 774 210.8
D 2 250 231718 1095.55 788 774 210.8

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