ASTROSAT CZTI

Data Quality Report

Orbit 40483

Creation date: 2024-06-27T22:16:39.708584
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/AS1A12_022T01_9000005540_40483cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40483cztM0_level2_quad_clean.evt
Size (bytes)830,260,800207,578,880
Size791.8 MB 198.0 MB
Events in quadrant A6,644,9641,423,103
Events in quadrant B6,021,5331,456,748
Events in quadrant C6,163,4071,407,435
Events in quadrant D10,862,8301,070,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283324
B0277403
C0273273
D0418343

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13404210.156670%
B13404320.238735%
C13404260.193972%
D13404266819.904506%

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 17491 13407 5 5 0.03% 0.04%
B 17491 13407 16 16 0.09% 0.12%
C 17491 13407 16 16 0.09% 0.12%
D 17491 13407 1250 1250 7.15% 9.32%

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 1028486 3534.43 1433 1402 290.6
A 12 189 29231 95.77 1433 1402 290.6
A 13 248 25076 81.47 1433 1402 290.6
B 4 170 271941 990.83 1420 1375 273.1
B 3 112 68912 247.32 1420 1375 273.1
B 5 255 41297 146.2 1420 1375 273.1
C 15 214 568441 1756.17 1393 1397 322.9
C 14 254 114255 349.53 1393 1397 322.9
C 9 187 29408 86.75 1393 1397 322.9
D 12 227 4500741 14556.36 1255 1219 309.1
D 12 191 407561 1314.55 1255 1219 309.1
D 2 250 388898 1254.18 1255 1219 309.1

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