ASTROSAT CZTI

Data Quality Report

Orbit 46747

Creation date: 2024-06-27T23:27:07.893620
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/AS1A13_092T17_9000006262_46747cztM0_level2.fits modeM0/AS1A13_092T17_9000006262_46747cztM0_level2_quad_clean.evt
Size (bytes)994,302,720165,847,680
Size948.2 MB 158.2 MB
Events in quadrant A10,857,8951,123,535
Events in quadrant B12,165,5281,045,958
Events in quadrant C5,281,0761,125,386
Events in quadrant D7,660,972972,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392358
B04385522
C0238934
D0306442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108874444.078258%
B10885148613.651814%
C108881411.295004%
D108898888.155019%

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 12835 10889 106 106 0.83% 0.97%
B 12835 10888 1089 1089 8.48% 10.00%
C 12835 10890 84 84 0.65% 0.77%
D 12835 10890 690 690 5.38% 6.34%

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 5667466 23027.09 1174 1151 246.1
A 3 7 295372 1195.67 1174 1151 246.1
A 9 191 165539 668.05 1174 1151 246.1
B 3 112 6560536 29302.95 1134 1099 223.8
B 12 3 435490 1940.55 1134 1099 223.8
B 4 171 382115 1702.11 1134 1099 223.8
C 14 254 568407 2060.35 1166 1176 275.3
C 3 233 134143 482.97 1166 1176 275.3
C 12 2 13171 43.57 1166 1176 275.3
D 13 249 2565238 9124.64 1119 1089 281.0
D 13 138 214357 758.92 1119 1089 281.0
D 1 52 197907 700.39 1119 1089 281.0

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