ASTROSAT CZTI

Data Quality Report

Orbit 30652

Creation date: 2024-06-27T20:18:09.930001
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_103T02_9000004416_30652cztM0_level2.evt modeM0/AS1A10_103T02_9000004416_30652cztM0_level2_quad_clean.evt
Size (bytes)1,128,677,760118,820,160
Size1.1 GB 113.3 MB
Events in quadrant A5,089,621774,453
Events in quadrant B7,368,315777,216
Events in quadrant C7,284,995704,140
Events in quadrant D13,799,646681,753

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212544
B0289514
C0276844
D0476464

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95152112.217551%
B95163093.247163%
C95168378.795712%
D9516202021.227406%

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 9900 9519 57 57 0.58% 0.60%
B 9901 9520 9 9 0.09% 0.09%
C 9901 9520 545 545 5.50% 5.72%
D 9901 9520 1683 1683 17.00% 17.68%

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 13 441433 1846.07 1191 1167 238.5
A 8 192 25974 104.02 1191 1167 238.5
A 13 254 19150 75.4 1191 1167 238.5
B 6 159 2624562 11722.87 1178 1147 223.8
B 0 229 48110 209.86 1178 1147 223.8
B 15 36 34252 147.93 1178 1147 223.8
C 10 22 2234566 8528.9 1118 1122 261.9
C 3 233 434926 1656.58 1118 1122 261.9
C 14 238 180747 685.94 1118 1122 261.9
D 8 195 7654348 29496.7 1091 1061 259.5
D 12 227 1546811 5957.51 1091 1061 259.5
D 13 249 154002 589.45 1091 1061 259.5

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