ASTROSAT CZTI

Data Quality Report

Orbit 48549

Creation date: 2024-09-19T22:06:24.455213
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_037T01_9000006436_48549cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48549cztM0_level2_quad_clean.evt
Size (bytes)384,886,08095,512,320
Size367.1 MB 91.1 MB
Events in quadrant A5,933,553610,312
Events in quadrant B2,644,008660,677
Events in quadrant C2,582,791632,252
Events in quadrant D2,621,241570,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233771661
B012919575
C013029579
D013138653

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01277
B01275
C01288
D01286

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59281933.255735%
B6013711.180775%
C6004230.383078%
D5994230.383717%

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 7185 6009 23 23 0.32% 0.38%
B 7243 6076 0 0 0.00% 0.00%
C 7263 6084 0 0 0.00% 0.00%
D 7269 6067 3 3 0.04% 0.05%

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 3455611 26063.14 632 618 132.6
A 12 189 16279 118.14 632 618 132.6
A 13 254 11457 81.77 632 618 132.6
B 0 155 35152 269.5 651 630 128.1
B 5 255 16850 126.62 651 630 128.1
B 12 111 16272 122.11 651 630 128.1
C 11 16 88991 584.92 638 642 151.0
C 13 61 4260 23.95 638 642 151.0
C 3 233 3725 20.41 638 642 151.0
D 2 165 117677 746.44 629 608 156.8
D 2 249 49307 310.51 629 608 156.8
D 2 234 28353 176.9 629 608 156.8

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