ASTROSAT CZTI

Data Quality Report

Orbit 35086

Creation date: 2022-03-28T14:14:03.020020
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/AS1T05_015T01_9000005026_35086cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35086cztM0_level2_quad_clean.evt
Size (bytes)508,443,84054,659,520
Size484.9 MB 52.1 MB
Events in quadrant A2,904,343324,440
Events in quadrant B3,853,221324,706
Events in quadrant C3,033,678323,591
Events in quadrant D5,236,171298,636

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119583
B0149732
C0121082
D0195132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5476170.310446%
B54762614.766253%
C5476180.328707%
D54762995.460190%

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 7358 5477 4 4 0.05% 0.07%
B 7358 5477 157 157 2.13% 2.87%
C 7358 5477 16 16 0.22% 0.29%
D 7358 5477 254 254 3.45% 4.64%

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 84465 592.36 712 700 141.4
A 9 143 24398 167.58 712 700 141.4
A 7 16 19384 132.13 712 700 141.4
B 5 172 819776 6328.96 687 670 129.4
B 5 255 134320 1032.67 687 670 129.4
B 0 189 91253 699.9 687 670 129.4
C 15 214 231134 1475.89 686 692 156.1
C 0 10 78599 498.96 686 692 156.1
C 12 250 29043 181.58 686 692 156.1
D 8 195 1400052 8641.08 678 662 161.9
D 2 250 314084 1935.35 678 662 161.9
D 13 249 204712 1259.99 678 662 161.9

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