ASTROSAT CZTI

Data Quality Report

Orbit 20160315_T01_103T01_9000000374_level2

Creation date: 2025-10-28T17:48:40.872535
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_103T01_9000000374cztM0_level2.fits modeM0/AS1T01_103T01_9000000374cztM0_level2_quad_clean.evt
Size (bytes)1,069,430,4001,120,867,200
Size1019.9 MB 1.0 GB
Events in quadrant A6,367,4166,740,546
Events in quadrant B6,213,1666,766,741
Events in quadrant C6,263,2146,451,642
Events in quadrant D5,153,9865,603,184

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024900
B024900
C024900
D024900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02528410
B02557460
C02549190
D03147660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12234318161.484351%
B12234421301.740993%
C12234316991.388719%
D12234484146.877329%

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 142742 122349 0 0 0.00% 0.00%
B 142742 122346 0 0 0.00% 0.00%
C 142742 122345 0 0 0.00% 0.00%
D 142742 121569 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 5980 10.27 1655 1533 433.2
A 7 110 5604 9.4 1655 1533 433.2
A 9 19 4643 7.18 1655 1533 433.2
B 2 9 5506 12.3 1637 1552 321.4
B 12 226 4676 9.72 1637 1552 321.4
B 14 254 4373 8.78 1637 1552 321.4
C 12 241 4598 6.86 1657 1517 449.0
C 7 111 4408 6.44 1657 1517 449.0
C 1 80 4206 5.99 1657 1517 449.0
D 3 14 4020 6.57 1471 1329 409.6
D 6 231 3793 6.02 1471 1329 409.6
D 7 5 3782 5.99 1471 1329 409.6

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