ASTROSAT CZTI

Data Quality Report

Orbit 42204

Creation date: 2024-06-27T22:38:30.775950
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_089T01_9000005776_42204cztM0_level2.fits modeM0/AS1A12_089T01_9000005776_42204cztM0_level2_quad_clean.evt
Size (bytes)340,732,80094,440,960
Size324.9 MB 90.1 MB
Events in quadrant A3,164,567632,153
Events in quadrant B2,707,873652,129
Events in quadrant C2,684,159611,196
Events in quadrant D3,596,270551,419

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128822
B0122073
C0118372
D0149782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5904260.440379%
B5903290.491276%
C590420.033875%
D59041903.218157%

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 8710 5906 14 14 0.16% 0.24%
B 8709 5905 12 12 0.14% 0.20%
C 8710 5906 0 0 0.00% 0.00%
D 8710 5906 166 166 1.91% 2.81%

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 592803 4480.67 638 623 132.2
A 13 248 64441 482.87 638 623 132.2
A 15 222 16580 120.74 638 623 132.2
B 0 229 95226 766.84 636 618 123.4
B 4 141 48120 385.02 636 618 123.4
B 3 112 22780 179.63 636 618 123.4
C 15 214 246978 1700.1 621 625 144.9
C 7 220 8124 51.75 621 625 144.9
C 13 61 4200 24.67 621 625 144.9
D 1 52 521490 3443.71 611 590 151.3
D 1 47 328997 2171.12 611 590 151.3
D 12 6 232146 1530.83 611 590 151.3

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