ASTROSAT CZTI

Data Quality Report

Orbit 28408

Creation date: 2024-06-27T19:51:26.665441
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/AS1A10_058T13_9000004088_28408cztM0_level2.evt modeM0/AS1A10_058T13_9000004088_28408cztM0_level2_quad_clean.evt
Size (bytes)1,517,126,400232,021,440
Size1.4 GB 221.3 MB
Events in quadrant A8,716,7201,477,802
Events in quadrant B9,686,9201,494,883
Events in quadrant C8,745,6581,433,471
Events in quadrant D17,560,3491,357,589

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374890
B0401610
C0376120
D0640250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183232221.211592%
B183243301.800917%
C183243261.779088%
D18324185410.117878%

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 20028 18323 3 3 0.01% 0.02%
B 20029 18324 50 50 0.25% 0.27%
C 20029 18324 1 1 0.00% 0.01%
D 20029 18324 1665 1665 8.31% 9.09%

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 15 174 70336 151.86 2231 2182 448.8
A 13 254 27497 56.41 2231 2182 448.8
A 12 96 24856 50.52 2231 2182 448.8
B 10 245 884685 2075.73 2210 2152 425.2
B 0 230 66093 150.39 2210 2152 425.2
B 12 111 54235 122.5 2210 2152 425.2
C 14 238 345435 680.11 2137 2150 504.8
C 7 220 50502 95.79 2137 2150 504.8
C 13 61 14547 24.56 2137 2150 504.8
D 8 195 5687706 11269.54 2096 2037 504.5
D 1 52 3487133 6907.79 2096 2037 504.5
D 2 250 247567 486.66 2096 2037 504.5

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