ASTROSAT CZTI

Data Quality Report

Orbit 21318

Creation date: 2024-06-27T18:26:18.782751
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/AS1A05_037T01_9000003144_21318cztM0_level2.evt modeM0/AS1A05_037T01_9000003144_21318cztM0_level2_quad_clean.evt
Size (bytes)490,648,32080,449,920
Size467.9 MB 76.7 MB
Events in quadrant A4,375,419494,636
Events in quadrant B3,369,563512,519
Events in quadrant C3,263,586494,706
Events in quadrant D3,412,366484,054

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169772
B0139692
C0137082
D0141572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64515578.634320%
B6451661.023097%
C6450801.240310%
D6450400.620155%

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 7576 6451 431 431 5.69% 6.68%
B 7576 6451 2 2 0.03% 0.03%
C 7575 6450 1 1 0.01% 0.02%
D 7575 6450 12 12 0.16% 0.19%

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 15 236 1188017 7376.09 800 786 161.0
A 5 16 48291 295.14 800 786 161.0
A 8 192 34097 206.96 800 786 161.0
B 3 64 36871 226.2 839 821 159.4
B 0 190 26433 160.71 839 821 159.4
B 12 111 18978 113.93 839 821 159.4
C 14 238 126420 676.9 802 807 185.6
C 10 23 8457 41.22 802 807 185.6
C 13 61 5673 26.22 802 807 185.6
D 13 153 135092 687.45 815 793 195.4
D 12 235 92026 467.01 815 793 195.4
D 1 52 49211 247.84 815 793 195.4

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