ASTROSAT CZTI

Data Quality Report

Orbit 34901

Creation date: 2024-06-27T21:06:43.159229
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/AS1A11_053T01_9000004996_34901cztM0_level2.evt modeM0/AS1A11_053T01_9000004996_34901cztM0_level2_quad_clean.evt
Size (bytes)378,627,84077,627,520
Size361.1 MB 74.0 MB
Events in quadrant A2,300,450499,688
Events in quadrant B2,769,093515,047
Events in quadrant C2,637,079518,308
Events in quadrant D3,426,253473,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100433
B0114132
C0106502
D0135212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490950.101854%
B49091132.301894%
C4909541.100020%
D49091112.261153%

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 7062 4910 0 0 0.00% 0.00%
B 7062 4910 72 72 1.02% 1.47%
C 7062 4910 39 39 0.55% 0.79%
D 7062 4910 92 92 1.30% 1.87%

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 57924 501.26 573 562 114.4
A 13 6 13165 110.13 573 562 114.4
A 13 254 8531 69.64 573 562 114.4
B 5 172 279451 2554.08 577 563 109.2
B 0 190 119389 1088.22 577 563 109.2
B 4 171 40853 368.98 577 563 109.2
C 15 214 222190 1704.46 567 573 130.0
C 0 10 148341 1136.49 567 573 130.0
C 14 67 28831 217.33 567 573 130.0
D 8 195 721251 5350.22 553 538 134.7
D 12 217 183361 1357.19 553 538 134.7
D 13 249 179738 1330.29 553 538 134.7

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