ASTROSAT CZTI

Data Quality Report

Orbit 40298

Creation date: 2024-06-27T22:14:40.443288
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_056T02_9000005538_40298cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40298cztM0_level2_quad_clean.evt
Size (bytes)1,058,777,280257,581,440
Size1009.7 MB 245.6 MB
Events in quadrant A9,297,1901,722,509
Events in quadrant B7,469,1771,801,569
Events in quadrant C8,842,0761,723,999
Events in quadrant D12,390,1821,486,771

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366065
B0322204
C0357064
D0471924

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154253842.489465%
B15425560.363047%
C154252061.335494%
D1542511637.539708%

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 21666 15429 264 264 1.22% 1.71%
B 21666 15429 26 26 0.12% 0.17%
C 21666 15429 157 157 0.72% 1.02%
D 21666 15429 1097 1097 5.06% 7.11%

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 1220477 3478.52 1736 1705 350.4
A 13 248 998991 2846.37 1736 1705 350.4
A 12 189 122679 345.27 1736 1705 350.4
B 0 230 162402 482.79 1736 1688 332.9
B 0 245 137361 407.56 1736 1688 332.9
B 5 255 102625 303.22 1736 1688 332.9
C 14 254 988772 2525.48 1697 1712 390.8
C 15 214 645411 1646.96 1697 1712 390.8
C 9 187 513722 1310.02 1697 1712 390.8
D 12 227 3215083 7852.84 1661 1614 409.2
D 12 233 1487666 3631.5 1661 1614 409.2
D 1 47 686415 1673.47 1661 1614 409.2

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