ASTROSAT CZTI

Data Quality Report

Orbit 39194

Creation date: 2024-06-27T22:01:38.197784
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_054T02_9000005444_39194cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39194cztM0_level2_quad_clean.evt
Size (bytes)826,824,960167,328,000
Size788.5 MB 159.6 MB
Events in quadrant A5,708,4191,155,752
Events in quadrant B4,632,9911,185,654
Events in quadrant C4,856,7611,134,839
Events in quadrant D14,574,336844,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241204
B0219893
C0217873
D0507643

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107622021.876975%
B10762350.325218%
C1076290.083628%
D10762247823.025460%

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 13569 10764 134 134 0.99% 1.24%
B 13569 10764 9 9 0.07% 0.08%
C 13569 10764 1 1 0.01% 0.01%
D 13569 10763 2185 2185 16.10% 20.30%

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 774501 3322.15 1145 1120 232.8
A 13 248 291146 1245.84 1145 1120 232.8
A 9 143 197617 844.07 1145 1120 232.8
B 5 172 104568 473.35 1143 1108 218.6
B 5 184 28287 124.35 1143 1108 218.6
B 12 111 28106 123.52 1143 1108 218.6
C 15 214 450189 1736.5 1117 1121 258.6
C 15 159 15659 56.22 1117 1121 258.6
C 3 233 12914 45.6 1117 1121 258.6
D 12 235 9403548 37297.83 1028 999 252.1
D 2 249 277338 1096.18 1028 999 252.1
D 5 222 222512 878.69 1028 999 252.1

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