ASTROSAT CZTI

Data Quality Report

Orbit 35234

Creation date: 2022-04-04T20:26:15.578963
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/AS1C07_004T01_9000005052_35234cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35234cztM0_level2_quad_clean.evt
Size (bytes)741,375,36087,678,720
Size707.0 MB 83.6 MB
Events in quadrant A2,579,414650,638
Events in quadrant B8,332,390481,265
Events in quadrant C3,227,794636,939
Events in quadrant D7,980,619538,309

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106453
B0282332
C0126522
D0271962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494450.101133%
B4944240048.543689%
C49441132.285599%
D494499720.165858%

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 7097 4945 1 1 0.01% 0.02%
B 7097 4945 1835 1835 25.86% 37.11%
C 7097 4945 74 74 1.04% 1.50%
D 7096 4944 1146 1146 16.15% 23.18%

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 93339 743.71 632 624 124.7
A 13 6 14014 107.41 632 624 124.7
A 7 191 10324 77.81 632 624 124.7
B 5 236 4925029 52822.65 492 482 93.2
B 5 172 1357348 14554.28 492 482 93.2
B 5 255 40505 429.3 492 482 93.2
C 10 49 358262 2606.02 596 602 137.2
C 0 10 277263 2015.84 596 602 137.2
C 15 214 210475 1529.2 596 602 137.2
D 8 195 4024184 29589.16 563 551 136.0
D 10 234 330504 2426.42 563 551 136.0
D 1 47 271665 1993.73 563 551 136.0

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