ASTROSAT CZTI

Data Quality Report

Orbit 25756

Creation date: 2024-06-27T19:21:09.850725
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/AS1A07_027T11_9000003752_25756cztM0_level2.evt modeM0/AS1A07_027T11_9000003752_25756cztM0_level2_quad_clean.evt
Size (bytes)566,928,00081,498,240
Size540.7 MB 77.7 MB
Events in quadrant A3,895,859489,432
Events in quadrant B3,910,056498,932
Events in quadrant C4,057,968474,500
Events in quadrant D4,774,136460,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164750
B0163470
C0167230
D0190020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78213214.104334%
B78213554.539062%
C78213734.769211%
D78214455.689809%

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 8086 7821 0 0 0.00% 0.00%
B 8086 7821 1 1 0.01% 0.01%
C 8086 7821 11 11 0.14% 0.14%
D 8086 7821 152 152 1.88% 1.94%

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 11 29 53053 259.3 984 962 200.9
A 6 16 51725 252.69 984 962 200.9
A 13 254 10641 48.18 984 962 200.9
B 0 219 29794 150.43 976 950 191.7
B 12 111 23734 118.83 976 950 191.7
B 0 245 23120 115.63 976 950 191.7
C 3 233 221036 988.08 943 948 222.7
C 14 238 147505 657.97 943 948 222.7
C 14 225 10884 44.61 943 948 222.7
D 12 1 475645 2092.43 949 925 226.9
D 8 195 320379 1408.06 949 925 226.9
D 13 104 189308 830.34 949 925 226.9

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