ASTROSAT CZTI

Data Quality Report

Orbit 54360

Creation date: 2025-10-16T10:50:01.302939
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/AS1A14_126T15_9000006516_54360cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54360cztM0_level2_quad_clean.evt
Size (bytes)878,935,68083,321,280
Size838.2 MB 79.5 MB
Events in quadrant A3,684,338688,019
Events in quadrant B3,697,902725,263
Events in quadrant C7,582,300545,393
Events in quadrant D17,012,23263,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162480
B0161760
C0275902
D0554440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7195761.056289%
B71951602.223767%
C7194129618.015013%
D7194661791.979427%

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 7195 7195 23 23 0.32% 0.32%
B 7195 7195 68 68 0.95% 0.95%
C 7194 7194 1223 1223 17.00% 17.00%
D 7194 7194 5512 5512 76.62% 76.62%

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 4 78 307230 1621.54 773 754 189.0
A 15 174 187227 986.61 773 754 189.0
A 4 249 46595 242.54 773 754 189.0
B 0 213 258397 1597.83 754 726 161.3
B 5 172 126233 778.28 754 726 161.3
B 14 167 95059 584.96 754 726 161.3
C 1 241 1430362 7730.97 678 673 184.9
C 13 3 954249 5156.41 678 673 184.9
C 1 16 858662 4639.53 678 673 184.9
D 8 176 14669272 197076.88 257 245 74.4
D 15 108 1031935 13860.65 257 245 74.4
D 3 176 73103 978.84 257 245 74.4

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