ASTROSAT CZTI

Data Quality Report

Orbit 01242

Creation date: 2024-06-27T14:09:42.490311
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_01242cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01242cztM0_level2_quad_clean.evt
Size (bytes)1,441,748,16093,208,320
Size1.3 GB 88.9 MB
Events in quadrant A8,683,442690,723
Events in quadrant B16,331,388454,304
Events in quadrant C8,293,838668,916
Events in quadrant D9,929,397555,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304141
B0536290
C0292040
D0342300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6476510.787523%
B6476344153.134651%
C64761302.007412%
D647686313.326127%

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 6476 1142 1142 15.06% 17.63%

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 3192271 6488.49 1606 1664 491.7
D 12 22 519571 1053.23 1606 1664 491.7
D 12 79 135258 271.68 1606 1664 491.7

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