ASTROSAT CZTI

Data Quality Report

Orbit 08985

Creation date: 2024-06-27T15:39:52.248293
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_107T01_9000001246_08985cztM0_level2.evt modeM0/AS1A03_107T01_9000001246_08985cztM0_level2_quad_clean.evt
Size (bytes)1,543,452,480246,064,320
Size1.4 GB 234.7 MB
Events in quadrant A9,741,4791,557,020
Events in quadrant B15,848,9351,522,134
Events in quadrant C10,668,6021,545,798
Events in quadrant D9,194,1551,511,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413305
B06050010
C0452485
D0411135

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191031840.963199%
B19102304315.930269%
C191037173.753337%
D191031190.622939%

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 20294 19109 43 43 0.21% 0.23%
B 20294 19107 2010 2010 9.90% 10.52%
C 20294 19109 412 412 2.03% 2.16%
D 20294 19109 68 68 0.34% 0.36%

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 8 5 1015553 2277.71 2196 2146 444.9
A 5 16 241089 537.04 2196 2146 444.9
A 3 1 20950 42.26 2196 2146 444.9
B 0 85 7306859 18214.0 2106 2054 401.1
B 4 173 144799 355.92 2106 2054 401.1
B 4 48 76843 186.48 2106 2054 401.1
C 4 254 2359491 4787.43 2126 2134 492.4
C 4 238 18391 33.02 2126 2134 492.4
C 13 61 15875 27.91 2126 2134 492.4
D 13 29 315107 547.57 2132 2079 571.7
D 1 52 306567 532.63 2132 2079 571.7
D 2 14 210751 365.02 2132 2079 571.7

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