ASTROSAT CZTI

Data Quality Report

Orbit 18998

Creation date: 2024-06-27T17:57:48.979261
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/AS1A05_132T01_9000002828_18998cztM0_level2.evt modeM0/AS1A05_132T01_9000002828_18998cztM0_level2_quad_clean.evt
Size (bytes)1,262,424,960150,641,280
Size1.2 GB 143.7 MB
Events in quadrant A12,716,627803,526
Events in quadrant B7,252,241977,951
Events in quadrant C6,937,805954,177
Events in quadrant D10,443,180920,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462823
B0300123
C0285183
D0402823

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13093257919.697548%
B130933402.596807%
C130932942.245475%
D130936334.834644%

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 14283 13094 1803 1803 12.62% 13.77%
B 14283 13095 78 78 0.55% 0.60%
C 14283 13095 70 70 0.49% 0.53%
D 14283 13095 340 340 2.38% 2.60%

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 14 235 6949733 23797.83 1442 1412 292.0
A 0 13 170565 579.35 1442 1412 292.0
A 9 143 49856 165.92 1442 1412 292.0
B 3 112 648557 2150.22 1570 1529 300.9
B 7 220 320546 1060.16 1570 1529 300.9
B 4 216 47578 153.03 1570 1529 300.9
C 3 233 766487 2146.44 1519 1531 356.4
C 14 238 231625 645.64 1519 1531 356.4
C 8 208 18028 46.29 1519 1531 356.4
D 7 238 3100643 8251.13 1526 1479 375.6
D 1 52 881052 2341.75 1526 1479 375.6
D 9 1 363636 964.2 1526 1479 375.6

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