ASTROSAT CZTI

Data Quality Report

Orbit 22604

Creation date: 2024-06-27T18:43:25.988160
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/AS1C05_006T01_9000003356_22604cztM0_level2.evt modeM0/AS1C05_006T01_9000003356_22604cztM0_level2_quad_clean.evt
Size (bytes)453,516,48092,260,800
Size432.5 MB 88.0 MB
Events in quadrant A3,240,779592,817
Events in quadrant B3,318,718600,471
Events in quadrant C3,251,878569,231
Events in quadrant D3,466,773563,148

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139342
B0140522
C0139522
D0145522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6720510.758929%
B6720600.892857%
C6720931.383929%
D6720290.431548%

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 7680 6721 0 0 0.00% 0.00%
B 7680 6721 0 0 0.00% 0.00%
C 7680 6721 0 0 0.00% 0.00%
D 7680 6721 1 1 0.01% 0.01%

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 13 254 10219 55.22 839 821 170.2
A 0 226 7330 38.24 839 821 170.2
A 14 238 7277 37.93 839 821 170.2
B 0 229 34966 211.98 833 813 161.1
B 12 111 19688 117.15 833 813 161.1
B 11 111 17439 103.19 833 813 161.1
C 14 238 128212 689.87 792 798 184.7
C 10 22 29104 153.26 792 798 184.7
C 0 10 5857 27.39 792 798 184.7
D 12 227 318535 1613.36 811 785 196.9
D 1 52 63125 316.53 811 785 196.9
D 2 234 25074 123.33 811 785 196.9

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