ASTROSAT CZTI

Data Quality Report

Orbit 24312

Creation date: 2024-06-27T19:04:38.341793
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_145T01_9000003594_24312cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24312cztM0_level2_quad_clean.evt
Size (bytes)1,744,617,600286,280,640
Size1.6 GB 273.0 MB
Events in quadrant A11,143,0591,771,997
Events in quadrant B11,459,1031,804,030
Events in quadrant C15,070,9261,761,957
Events in quadrant D13,600,7591,739,592

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482344
B0486494
C0616595
D0556184

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231403921.694036%
B231415492.372413%
C231406692.891098%
D231408463.656007%

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 31867 23142 3 3 0.01% 0.01%
B 31868 23143 109 109 0.34% 0.47%
C 31868 23142 19 19 0.06% 0.08%
D 31868 23142 428 428 1.34% 1.85%

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 3 1 248594 430.79 2823 2757 570.7
A 13 254 36790 59.64 2823 2757 570.7
A 3 137 26287 41.23 2823 2757 570.7
B 5 32 352150 650.53 2811 2740 537.1
B 12 111 66153 118.06 2811 2740 537.1
B 11 111 59393 105.48 2811 2740 537.1
C 7 247 3432362 5430.26 2721 2746 631.6
C 14 238 427917 673.19 2721 2746 631.6
C 2 16 421225 662.6 2721 2746 631.6
D 1 52 1926855 2894.58 2742 2655 664.8
D 12 233 982844 1474.5 2742 2655 664.8
D 8 195 189163 280.56 2742 2655 664.8

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