ASTROSAT CZTI

Data Quality Report

Orbit 01241

Creation date: 2024-06-27T14:09:41.427574
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/AS1G04_011T02_9000000226_01241cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01241cztM0_level2_quad_clean.evt
Size (bytes)1,441,540,80093,188,160
Size1.3 GB 88.9 MB
Events in quadrant A8,683,442690,592
Events in quadrant B16,331,388454,217
Events in quadrant C8,293,838668,810
Events in quadrant D9,923,253555,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304130
B0536290
C0292040
D03423020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6476510.787523%
B6476344153.134651%
C64761302.007412%
D647486113.299351%

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 7582 6476 459 459 6.05% 7.09%
B 7582 6476 4665 4665 61.53% 72.04%
C 7582 6476 371 371 4.89% 5.73%
D 7582 6475 1140 1140 15.04% 17.61%

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 3 80 1031689 2188.8 1988 2003 470.4
A 13 9 9512 15.96 1988 2003 470.4
A 11 79 8812 14.47 1988 2003 470.4
B 2 32 10282677 29895.66 1477 1482 343.9
B 8 4 231973 670.22 1477 1482 343.9
B 5 191 128435 369.15 1477 1482 343.9
C 9 52 506157 964.36 1901 1973 522.8
C 15 241 330855 629.06 1901 1973 522.8
C 3 111 22412 39.09 1901 1973 522.8
D 1 239 3188655 6483.93 1606 1663 491.5
D 12 22 519571 1053.68 1606 1663 491.5
D 12 79 135156 271.59 1606 1663 491.5

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