ASTROSAT CZTI

Data Quality Report

Orbit 24524

Creation date: 2024-06-27T19:06:53.997861
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/AS1T03_183T01_9000003606_24524cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24524cztM0_level2_quad_clean.evt
Size (bytes)587,548,800131,270,400
Size560.3 MB 125.2 MB
Events in quadrant A3,957,428886,533
Events in quadrant B3,626,835903,586
Events in quadrant C3,737,795848,044
Events in quadrant D5,963,590815,491

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165521
B0157331
C0161191
D0229971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7511600.798828%
B7510480.639148%
C75101241.651132%
D75111512.010385%

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 7866 7512 9 9 0.11% 0.12%
B 7865 7511 5 5 0.06% 0.07%
C 7865 7511 43 43 0.55% 0.57%
D 7866 7512 112 112 1.42% 1.49%

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 14 111 566197 3216.56 878 860 175.8
A 13 254 13112 69.71 878 860 175.8
A 3 137 7811 39.55 878 860 175.8
B 3 64 143103 850.62 880 857 167.2
B 12 111 20446 117.14 880 857 167.2
B 7 202 18247 103.99 880 857 167.2
C 10 9 220072 1135.51 838 843 193.1
C 14 238 134045 689.93 838 843 193.1
C 2 16 103178 530.05 838 843 193.1
D 1 52 2699385 13260.84 841 815 203.5
D 8 195 46986 226.89 841 815 203.5
D 2 234 30619 146.46 841 815 203.5

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