ASTROSAT CZTI

Data Quality Report

Orbit 40609

Creation date: 2024-06-27T22:18:11.076134
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_054T02_9000005550_40609cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40609cztM0_level2_quad_clean.evt
Size (bytes)401,181,12090,529,920
Size382.6 MB 86.3 MB
Events in quadrant A2,974,549633,890
Events in quadrant B3,224,070640,504
Events in quadrant C3,000,096604,811
Events in quadrant D5,204,064459,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123523
B0133162
C0125972
D0194172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5746120.208841%
B5746701.218239%
C5746711.235642%
D5746125921.910895%

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 7359 5747 4 4 0.05% 0.07%
B 7359 5747 60 60 0.82% 1.04%
C 7359 5747 63 63 0.86% 1.10%
D 7359 5747 397 397 5.39% 6.91%

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 534058 4123.4 623 609 129.4
A 12 189 17008 126.76 623 609 129.4
A 6 10 8750 62.93 623 609 129.4
B 0 190 254873 2131.29 615 597 119.3
B 0 229 186071 1554.6 615 597 119.3
B 5 255 153831 1284.37 615 597 119.3
C 14 254 328244 2331.83 604 607 140.5
C 15 214 252240 1790.9 604 607 140.5
C 3 233 16748 114.88 604 607 140.5
D 12 227 1173705 8667.75 549 533 135.3
D 2 249 1017582 7514.27 549 533 135.3
D 12 191 200056 1474.14 549 533 135.3

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