ASTROSAT CZTI

Data Quality Report

Orbit 20170608_C02_041T02_9000001282_level2

Creation date: 2025-11-14T09:56:43.476501
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/AS1C02_041T02_9000001282cztM0_level2.fits modeM0/AS1C02_041T02_9000001282cztM0_level2_quad_clean.evt
Size (bytes)920,848,320797,728,320
Size878.2 MB 760.8 MB
Events in quadrant A5,530,0584,561,100
Events in quadrant B5,416,7224,567,025
Events in quadrant C5,533,5024,347,803
Events in quadrant D4,725,6744,000,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019800
B019800
C019800
D019800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02372940
B02074080
C01999330
D02278470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9748415211.560256%
B9748112951.328464%
C974887220.740604%
D9748524942.558342%

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 114644 97477 0 0 0.00% 0.00%
B 114645 97474 0 0 0.00% 0.00%
C 114645 97477 0 0 0.00% 0.00%
D 114645 97444 0 0 0.00% 0.00%

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 29 5447 11.34 1441 1345 361.8
A 7 110 4547 8.85 1441 1345 361.8
A 0 30 4283 8.12 1441 1345 361.8
B 2 9 4753 12.16 1431 1362 279.0
B 2 8 3633 8.14 1431 1362 279.0
B 12 226 3624 8.11 1431 1362 279.0
C 1 80 4120 7.28 1460 1354 379.9
C 1 81 4029 7.04 1460 1354 379.9
C 12 241 3946 6.82 1460 1354 379.9
D 3 14 3577 6.51 1349 1226 361.0
D 6 231 3485 6.26 1349 1226 361.0
D 7 5 3472 6.22 1349 1226 361.0

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