ASTROSAT CZTI

Data Quality Report

Orbit 34058

Creation date: 2024-06-27T20:55:59.155624
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/AS1A06_003T04_9000004866_34058cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34058cztM0_level2_quad_clean.evt
Size (bytes)620,182,08052,274,880
Size591.5 MB 49.9 MB
Events in quadrant A3,889,947305,239
Events in quadrant B6,683,485304,517
Events in quadrant C4,077,873293,970
Events in quadrant D3,759,469293,864

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149332
B0236341
C0155051
D0148391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55022133.871320%
B5502123922.519084%
C55023466.288622%
D55021452.635405%

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 7383 5503 178 178 2.41% 3.23%
B 7383 5503 946 946 12.81% 17.19%
C 7383 5503 335 335 4.54% 6.09%
D 7383 5503 130 130 1.76% 2.36%

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 15 169 1239114 9120.02 677 663 135.8
A 10 83 19281 137.1 677 663 135.8
A 7 16 12712 88.73 677 663 135.8
B 5 31 1665517 13460.23 657 641 123.7
B 5 15 1336127 10797.17 657 641 123.7
B 5 14 465820 3760.89 657 641 123.7
C 0 10 1045595 7040.18 645 650 148.4
C 15 214 235085 1579.47 645 650 148.4
C 7 221 101465 679.23 645 650 148.4
D 8 195 291695 1829.78 654 637 159.1
D 13 249 280969 1762.35 654 637 159.1
D 2 250 168204 1053.44 654 637 159.1

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