ASTROSAT CZTI

Data Quality Report

Orbit 15550

Creation date: 2024-06-27T17:10:12.470763
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/AS1G08_030T01_9000002302_15550cztM0_level2.evt modeM0/AS1G08_030T01_9000002302_15550cztM0_level2_quad_clean.evt
Size (bytes)537,900,480106,323,840
Size513.0 MB 101.4 MB
Events in quadrant A3,576,472695,796
Events in quadrant B3,804,583698,475
Events in quadrant C3,678,939660,922
Events in quadrant D4,722,041643,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156172
B0161461
C0157061
D0192731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74901441.922563%
B74901792.389853%
C74901762.349800%
D74903484.646195%

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 7606 7493 1 1 0.01% 0.01%
B 7606 7493 18 18 0.24% 0.24%
C 7606 7493 1 1 0.01% 0.01%
D 7606 7492 185 185 2.43% 2.47%

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 0 226 8336 39.6 929 909 187.6
A 12 194 6745 31.12 929 909 187.6
A 3 137 6351 29.02 929 909 187.6
B 3 64 100905 558.1 923 897 179.2
B 0 189 42733 233.47 923 897 179.2
B 12 111 21340 114.08 923 897 179.2
C 14 238 137743 653.84 888 892 209.3
C 3 233 26532 122.5 888 892 209.3
C 0 207 12646 56.16 888 892 209.3
D 1 52 847549 3548.18 890 868 238.6
D 5 222 265686 1109.77 890 868 238.6
D 13 172 87328 362.33 890 868 238.6

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