ASTROSAT CZTI

Data Quality Report

Orbit 41636

Creation date: 2024-06-27T22:30:58.978710
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/AS1A12_035T02_9000005680_41636cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41636cztM0_level2_quad_clean.evt
Size (bytes)487,520,64078,387,840
Size464.9 MB 74.8 MB
Events in quadrant A2,673,465590,378
Events in quadrant B2,343,958598,920
Events in quadrant C3,118,955536,586
Events in quadrant D9,526,035301,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108663
B0103252
C0120632
D0316782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493890.182260%
B4938120.243013%
C49382354.759012%
D4938238148.217902%

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 7000 4939 3 3 0.04% 0.06%
B 7000 4939 3 3 0.04% 0.06%
C 7000 4939 225 225 3.21% 4.56%
D 7000 4939 2479 2479 35.41% 50.19%

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 10 83 498313 4386.75 556 546 113.5
A 13 254 9287 77.03 556 546 113.5
A 3 1 6331 50.98 556 546 113.5
B 4 171 85656 798.61 553 538 106.6
B 4 141 43042 398.79 553 538 106.6
B 0 189 20022 182.81 553 538 106.6
C 0 10 544870 4388.17 529 531 124.0
C 15 214 206733 1662.29 529 531 124.0
C 14 254 147600 1185.59 529 531 124.0
D 12 79 6507465 57639.24 462 449 112.9
D 2 249 563566 4988.1 462 449 112.9
D 13 249 448220 3966.36 462 449 112.9

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