ASTROSAT CZTI

Data Quality Report

Orbit 39332

Creation date: 2024-06-27T22:03:20.162000
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/AS1A12_061T07_9000005468_39332cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39332cztM0_level2_quad_clean.evt
Size (bytes)332,147,52090,000,000
Size316.8 MB 85.8 MB
Events in quadrant A2,668,507607,822
Events in quadrant B2,378,252634,148
Events in quadrant C2,602,257604,446
Events in quadrant D4,273,525543,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106063
B098442
C0103482
D0160462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4784150.313545%
B4784130.271739%
C4784220.459866%
D47841382.884615%

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 6937 4785 6 6 0.09% 0.13%
B 6937 4785 3 3 0.04% 0.06%
C 6937 4785 11 11 0.16% 0.23%
D 6937 4785 130 130 1.87% 2.72%

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 10 83 392768 3369.4 578 570 116.4
A 2 247 37187 314.58 578 570 116.4
A 13 254 6898 54.36 578 570 116.4
B 5 184 46016 416.68 577 564 109.1
B 5 172 36955 333.61 577 564 109.1
B 5 255 24692 221.19 577 564 109.1
C 15 214 222453 1682.81 571 576 131.8
C 14 254 83208 626.72 571 576 131.8
C 0 239 22836 168.83 571 576 131.8
D 12 235 1558524 11392.44 561 547 136.8
D 2 153 234388 1709.92 561 547 136.8
D 13 249 105725 769.1 561 547 136.8

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