ASTROSAT CZTI

Data Quality Report

Orbit 53495

Creation date: 2025-08-19T10:43:17.151389
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/AS1A14_002T07_9000006498_53495cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53495cztM0_level2_quad_clean.evt
Size (bytes)840,576,96077,209,920
Size801.6 MB 73.6 MB
Events in quadrant A12,417,606307,772
Events in quadrant B3,660,525669,545
Events in quadrant C11,043,128347,335
Events in quadrant D3,489,445558,902

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413911
B0153361
C0371905
D0151841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6517358254.963940%
B65181602.454741%
C6517297145.588461%
D6517741.135492%

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 7482 6518 3435 3435 45.91% 52.70%
B 7483 6519 67 67 0.90% 1.03%
C 7482 6518 2985 2985 39.90% 45.80%
D 7482 6518 31 31 0.41% 0.48%

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 3 63 4236916 33624.99 512 500 126.0
A 15 174 3176208 25206.01 512 500 126.0
A 3 62 2945649 23376.04 512 500 126.0
B 5 185 186233 1232.7 693 666 150.5
B 4 170 163100 1079.03 693 666 150.5
B 2 249 129948 858.81 693 666 150.5
C 1 241 5367112 38228.31 513 507 140.4
C 7 64 2499008 17797.75 513 507 140.4
C 15 224 851133 6059.32 513 507 140.4
D 2 120 441168 2275.6 679 647 193.6
D 1 0 128446 660.17 679 647 193.6
D 3 12 74452 381.25 679 647 193.6

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