ASTROSAT CZTI

Data Quality Report

Orbit 09459

Creation date: 2024-06-27T15:46:23.363674
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/AS1T01_177T01_9000001344_09459cztM0_level2.evt modeM0/AS1T01_177T01_9000001344_09459cztM0_level2_quad_clean.evt
Size (bytes)856,189,440144,506,880
Size816.5 MB 137.8 MB
Events in quadrant A6,647,528883,013
Events in quadrant B6,152,602880,499
Events in quadrant C5,768,276862,597
Events in quadrant D6,480,220851,458

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028489274
B027215294
C026809270
D028784243

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02706
B02702
C02700
D02691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130031991.530416%
B129851621.247593%
C129941010.777282%
D130121841.414079%

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 14775 13078 33 33 0.22% 0.25%
B 14775 13077 2 2 0.01% 0.02%
C 14775 13081 1 1 0.01% 0.01%
D 14775 13083 77 77 0.52% 0.59%

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 8 5 658893 2104.62 1526 1490 312.4
A 1 162 58352 182.04 1526 1490 312.4
A 1 178 19452 57.5 1526 1490 312.4
B 5 255 101368 338.95 1528 1490 294.7
B 0 187 47018 154.51 1528 1490 294.7
B 12 111 33364 108.17 1528 1490 294.7
C 13 61 11316 28.63 1473 1479 343.6
C 14 234 10279 25.61 1473 1479 343.6
C 9 68 9717 23.97 1473 1479 343.6
D 12 233 396973 1101.11 1468 1432 359.2
D 1 52 161309 445.07 1468 1432 359.2
D 8 195 148464 409.31 1468 1432 359.2

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