ASTROSAT CZTI

Data Quality Report

Orbit 40117

Creation date: 2024-06-27T22:12:32.858544
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_004T01_9000005520_40117cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40117cztM0_level2_quad_clean.evt
Size (bytes)407,894,40092,856,960
Size389.0 MB 88.6 MB
Events in quadrant A2,907,448633,747
Events in quadrant B2,717,207650,495
Events in quadrant C5,691,616557,852
Events in quadrant D3,330,581563,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121473
B0122062
C0207894
D0140752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581060.103270%
B5810160.275387%
C580973212.601136%
D58101312.254733%

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 9065 5812 3 3 0.03% 0.05%
B 9065 5812 11 11 0.12% 0.19%
C 9065 5811 728 728 8.03% 12.53%
D 9065 5812 120 120 1.32% 2.06%

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 491562 3831.44 623 611 128.1
A 3 137 6824 48.49 623 611 128.1
A 0 226 5237 36.1 623 611 128.1
B 4 171 178599 1461.93 619 600 121.8
B 0 189 40763 329.86 619 600 121.8
B 0 245 39603 320.34 619 600 121.8
C 9 187 3003085 22166.99 576 580 135.4
C 15 214 232649 1713.33 576 580 135.4
C 14 254 142193 1045.5 576 580 135.4
D 13 249 324330 2190.31 603 588 147.8
D 2 249 200508 1352.58 603 588 147.8
D 9 19 155841 1050.38 603 588 147.8

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