ASTROSAT CZTI

Data Quality Report

Orbit 37406

Creation date: 2024-06-27T21:39:36.330263
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/AS1A09_002T01_9000005322_37406cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37406cztM0_level2_quad_clean.evt
Size (bytes)430,104,96098,910,720
Size410.2 MB 94.3 MB
Events in quadrant A3,154,660650,778
Events in quadrant B2,525,350685,602
Events in quadrant C2,707,980681,925
Events in quadrant D4,300,706629,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122512
B0104571
C0107451
D0161571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49702344.708249%
B4970260.523139%
C4970180.362173%
D49701533.078471%

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 7124 4971 174 174 2.44% 3.50%
B 7124 4971 14 14 0.20% 0.28%
C 7124 4971 13 13 0.18% 0.26%
D 7124 4971 150 150 2.11% 3.02%

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 15 222 563671 4762.64 598 590 118.2
A 10 83 243479 2054.4 598 590 118.2
A 13 6 13395 108.31 598 590 118.2
B 0 229 47707 415.39 603 588 113.4
B 5 172 38761 336.53 603 588 113.4
B 0 183 22087 189.53 603 588 113.4
C 15 214 214863 1567.28 600 605 136.7
C 0 10 68010 493.06 600 605 136.7
C 12 250 25361 181.09 600 605 136.7
D 1 52 1206446 8444.43 595 580 142.8
D 1 47 238594 1666.76 595 580 142.8
D 12 227 186529 1302.16 595 580 142.8

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