ASTROSAT CZTI

Data Quality Report

Orbit 25763

Creation date: 2024-06-27T19:21:13.545585
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/AS1A09_147T01_9000003754_25763cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25763cztM0_level2_quad_clean.evt
Size (bytes)489,536,64077,495,040
Size466.9 MB 73.9 MB
Events in quadrant A3,327,692487,786
Events in quadrant B3,447,051493,409
Events in quadrant C3,394,955464,601
Events in quadrant D4,231,117463,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139820
B0143310
C0140550
D0167540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267540.861656%
B6267751.196745%
C62671101.755226%
D62672784.435934%

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 7522 6267 0 0 0.00% 0.00%
B 7522 6267 0 0 0.00% 0.00%
C 7522 6267 2 2 0.03% 0.03%
D 7522 6267 223 223 2.96% 3.56%

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 13 254 9487 51.2 860 844 168.8
A 5 203 7922 41.93 860 844 168.8
A 0 226 7432 39.03 860 844 168.8
B 0 229 41452 256.57 856 838 158.3
B 12 111 18098 109.04 856 838 158.3
B 11 111 16122 96.55 856 838 158.3
C 14 238 132611 704.81 810 818 187.0
C 3 233 103971 551.65 810 818 187.0
C 13 61 5734 26.29 810 818 187.0
D 7 80 803055 4073.33 805 786 197.0
D 8 195 222957 1128.02 805 786 197.0
D 12 1 46801 233.63 805 786 197.0

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