ASTROSAT CZTI

Data Quality Report

Orbit 10777

Creation date: 2024-06-27T16:03:35.827953
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/AS1G07_014T02_9000001556_10777cztM0_level2.evt modeM0/AS1G07_014T02_9000001556_10777cztM0_level2_quad_clean.evt
Size (bytes)1,827,933,120268,053,120
Size1.7 GB 255.6 MB
Events in quadrant A10,375,5431,658,493
Events in quadrant B15,337,6381,642,157
Events in quadrant C10,234,8771,665,059
Events in quadrant D17,851,9411,561,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470065
B0606684
C0468324
D0684074

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231021780.770496%
B2310214556.298156%
C231021670.722881%
D2310212505.410787%

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 25247 23106 6 6 0.02% 0.03%
B 25247 23106 789 789 3.13% 3.41%
C 25247 23106 0 0 0.00% 0.00%
D 25247 23106 909 909 3.60% 3.93%

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 1 162 37963 64.97 2664 2598 544.3
A 15 174 37421 63.97 2664 2598 544.3
A 0 226 24192 39.67 2664 2598 544.3
B 4 239 4536875 9068.9 2626 2557 500.0
B 0 85 243405 481.71 2626 2557 500.0
B 0 214 136381 267.65 2626 2557 500.0
C 13 61 19374 27.61 2622 2629 606.4
C 8 222 11818 15.15 2622 2629 606.4
C 14 234 7682 8.33 2622 2629 606.4
D 13 104 2811344 4561.12 2552 2479 615.8
D 8 195 1700146 2756.73 2552 2479 615.8
D 1 52 1408688 2283.45 2552 2479 615.8

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