ASTROSAT CZTI

Data Quality Report

Orbit 20170824_A03_124T01_9000001486_level2

Creation date: 2026-03-13T16:12:06.763239
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/AS1A03_124T01_9000001486cztM0_level2.fits modeM0/AS1A03_124T01_9000001486cztM0_level2_quad_clean.evt
Size (bytes)1,043,686,0801,065,159,360
Size995.3 MB 1015.8 MB
Events in quadrant A6,371,6766,517,418
Events in quadrant B6,014,5066,347,420
Events in quadrant C6,209,5446,116,426
Events in quadrant D5,572,4255,842,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02286910
B02432180
C02226280
D02524400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02070
C02070
D02070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022450
B022290
C022420
D022350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10793213031.207242%
B10631125032.354413%
C1081708570.792271%
D11167614711.317203%

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 135202 112674 0 0 0.00% 0.00%
B 135201 111214 0 0 0.00% 0.00%
C 135202 112743 0 0 0.00% 0.00%
D 135202 113214 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 6044 10.99 1657 1554 408.7
A 7 110 5209 8.94 1657 1554 408.7
A 9 19 4689 7.67 1657 1554 408.7
B 2 9 5060 11.44 1585 1514 309.9
B 5 128 4043 8.16 1585 1514 309.9
B 14 254 3993 8.0 1585 1514 309.9
C 1 80 4592 7.25 1637 1523 423.5
C 1 81 4540 7.12 1637 1523 423.5
C 12 241 4230 6.39 1637 1523 423.5
D 6 231 4115 6.24 1592 1447 427.6
D 3 14 4080 6.16 1592 1447 427.6
D 3 31 3890 5.71 1592 1447 427.6

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