ASTROSAT CZTI

Data Quality Report

Orbit 20201101_C05_019T04_9000003956_level2

Creation date: 2025-12-17T01:29:54.566716
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/AS1C05_019T04_9000003956cztM0_level2.fits modeM0/AS1C05_019T04_9000003956cztM0_level2_quad_clean.evt
Size (bytes)962,740,8001,103,440,320
Size918.1 MB 1.0 GB
Events in quadrant A5,966,6167,020,012
Events in quadrant B5,689,8207,030,809
Events in quadrant C5,746,1006,648,885
Events in quadrant D4,949,7105,919,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020200
B020200
C020200
D020200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02083150
B02210800
C02141320
D02817450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9921213771.387937%
B9921225782.598476%
C9921223202.338427%
D9921261396.187760%

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 111895 99195 0 0 0.00% 0.00%
B 111895 99146 0 0 0.00% 0.00%
C 111895 99192 0 0 0.00% 0.00%
D 111895 99100 0 0 0.00% 0.00%

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 0 29 5826 11.67 1551 1464 373.8
A 7 110 4765 8.83 1551 1464 373.8
A 0 30 4614 8.43 1551 1464 373.8
B 2 9 4632 11.04 1504 1442 289.1
B 2 8 3893 8.48 1504 1442 289.1
B 5 255 3699 7.81 1504 1442 289.1
C 12 241 4101 7.06 1521 1427 378.8
C 3 126 3931 6.61 1521 1427 378.8
C 9 209 3901 6.53 1521 1427 378.8
D 10 189 3569 6.11 1411 1285 373.7
D 6 231 3532 6.01 1411 1285 373.7
D 15 46 3487 5.89 1411 1285 373.7

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