ASTROSAT CZTI

Data Quality Report

Orbit 20210720_A10_094T29_9000004564_level2

Creation date: 2025-12-27T16:43:46.398436
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_094T29_9000004564cztM0_level2.fits modeM0/AS1A10_094T29_9000004564cztM0_level2_quad_clean.evt
Size (bytes)67,993,92071,043,840
Size64.8 MB 67.8 MB
Events in quadrant A415,918435,577
Events in quadrant B389,162425,618
Events in quadrant C404,772413,464
Events in quadrant D357,264383,858

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143640
B0215970
C0145920
D0168820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7068340.481041%
B70681021.443124%
C7068821.160158%
D7068470.664969%

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 7987 7067 0 0 0.00% 0.00%
B 7987 7066 0 0 0.00% 0.00%
C 7987 7067 0 0 0.00% 0.00%
D 7987 7066 0 0 0.00% 0.00%

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 29 431 11.51 108 102 28.6
A 0 30 356 8.89 108 102 28.6
A 7 110 352 8.75 108 102 28.6
B 2 9 327 10.17 102 98 22.5
B 5 232 275 7.86 102 98 22.5
B 2 8 273 7.77 102 98 22.5
C 1 81 312 7.4 106 100 28.7
C 1 65 310 7.33 106 100 28.7
C 1 80 306 7.19 106 100 28.7
D 15 47 274 6.28 101 92 29.0
D 3 14 262 5.87 101 92 29.0
D 7 3 261 5.83 101 92 29.0

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