ASTROSAT CZTI

Data Quality Report

Orbit 11201

Creation date: 2024-06-27T16:09:39.169633
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/AS1A04_171T01_9000001634_11201cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11201cztM0_level2_quad_clean.evt
Size (bytes)222,439,68032,198,400
Size212.1 MB 30.7 MB
Events in quadrant A1,717,039199,848
Events in quadrant B1,504,008216,119
Events in quadrant C1,083,664214,162
Events in quadrant D2,280,965185,858

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0504
B0504
C0502
D0526

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07223621
B06320444
C05023445
D097191503

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21851496.819222%
B2202944.268847%
C220570.317460%
D217844020.202020%

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 3573 2212 99 99 2.77% 4.48%
B 3598 2228 38 38 1.06% 1.71%
C 3590 2231 0 0 0.00% 0.00%
D 3519 2198 334 334 9.49% 15.20%

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 15 239 327934 5657.57 275 269 57.9
A 8 5 200177 3451.68 275 269 57.9
A 8 15 109059 1878.4 275 269 57.9
B 4 239 294076 5226.59 286 279 56.2
B 15 204 25297 445.06 286 279 56.2
B 0 214 24013 422.22 286 279 56.2
C 13 61 1969 25.85 277 279 65.4
C 3 202 676 6.07 277 279 65.4
C 7 159 654 5.73 277 279 65.4
D 1 52 937649 15993.14 239 232 58.6
D 10 253 124464 2119.5 239 232 58.6
D 14 34 101255 1723.54 239 232 58.6

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