ASTROSAT CZTI

Data Quality Report

Orbit 15824

Creation date: 2024-06-27T17:14:02.426889
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/AS1A04_143T01_9000002344_15824cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15824cztM0_level2_quad_clean.evt
Size (bytes)406,261,44076,518,720
Size387.4 MB 73.0 MB
Events in quadrant A2,855,361480,163
Events in quadrant B3,154,580487,454
Events in quadrant C3,056,339464,719
Events in quadrant D2,823,344460,003

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01284
B01286
C01282
D01284

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012917391
B013710423
C013471469
D012952404

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60861612.645416%
B60812243.683605%
C60601953.217822%
D60791462.401711%

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 6492 6189 1 1 0.02% 0.02%
B 6501 6193 31 31 0.48% 0.50%
C 6505 6179 0 0 0.00% 0.00%
D 6497 6185 1 1 0.02% 0.02%

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 15 239 12676 79.6 736 718 150.2
A 9 143 12661 79.5 736 718 150.2
A 0 226 6510 38.56 736 718 150.2
B 4 173 134310 937.97 733 713 142.4
B 10 245 61327 425.57 733 713 142.4
B 4 216 24560 167.43 733 713 142.4
C 7 247 190245 1147.17 705 709 165.2
C 14 238 106587 640.83 705 709 165.2
C 13 61 5058 26.32 705 709 165.2
D 1 52 45804 253.28 723 700 178.1
D 2 152 25515 139.35 723 700 178.1
D 2 234 24936 136.09 723 700 178.1

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