ASTROSAT CZTI

Data Quality Report

Orbit 19326

Creation date: 2024-06-27T18:01:25.895687
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/AS1A05_204T01_9000002856_19326cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19326cztM0_level2_quad_clean.evt
Size (bytes)510,517,44095,898,240
Size486.9 MB 91.5 MB
Events in quadrant A3,250,242626,125
Events in quadrant B3,435,155628,393
Events in quadrant C3,439,739602,119
Events in quadrant D4,874,351573,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141232
B0146542
C0145002
D0192442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6794390.574036%
B6794600.883132%
C6794881.295261%
D67944416.491021%

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 7624 6795 0 0 0.00% 0.00%
B 7624 6796 1 1 0.01% 0.01%
C 7624 6796 0 0 0.00% 0.00%
D 7624 6796 263 263 3.45% 3.87%

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 4 2 17169 96.63 834 814 169.3
A 11 29 13615 75.63 834 814 169.3
A 5 16 8448 45.1 834 814 169.3
B 6 36 80246 508.83 828 808 156.1
B 0 229 54442 343.55 828 808 156.1
B 0 190 33519 209.53 828 808 156.1
C 3 233 173224 914.82 803 811 188.5
C 14 238 124376 655.63 803 811 188.5
C 13 61 5455 24.64 803 811 188.5
D 1 52 917196 4760.64 794 773 192.5
D 7 238 609807 3163.81 794 773 192.5
D 11 176 272397 1411.03 794 773 192.5

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