ASTROSAT CZTI

Data Quality Report

Orbit 37683

Creation date: 2024-06-27T21:43:04.437603
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_075T01_9000005342_37683cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37683cztM0_level2_quad_clean.evt
Size (bytes)434,931,84073,393,920
Size414.8 MB 70.0 MB
Events in quadrant A2,929,008456,668
Events in quadrant B2,756,531472,521
Events in quadrant C2,722,994478,792
Events in quadrant D4,389,863429,606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121933
B0118642
C0113922
D0169882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5502280.508906%
B5502450.817884%
C5502250.454380%
D55024948.978553%

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 9388 5503 24 24 0.26% 0.44%
B 9389 5502 26 26 0.28% 0.47%
C 9389 5502 18 18 0.19% 0.33%
D 9389 5503 496 496 5.28% 9.01%

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 306899 2457.69 615 603 124.6
A 15 222 135898 1085.6 615 603 124.6
A 13 248 80303 639.51 615 603 124.6
B 5 200 89489 747.53 618 600 118.9
B 5 172 64928 540.98 618 600 118.9
B 5 255 38450 318.31 618 600 118.9
C 15 214 252661 1778.22 611 617 141.7
C 0 10 71002 496.58 611 617 141.7
C 14 254 9262 60.99 611 617 141.7
D 12 227 1586325 11013.99 591 575 144.0
D 5 32 261531 1812.5 591 575 144.0
D 2 153 146129 1010.96 591 575 144.0

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