ASTROSAT CZTI

Data Quality Report

Orbit 20210519_C05_019T04_9000004388_level2

Creation date: 2025-12-25T22:59:00.102924
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_9000004388cztM0_level2.fits modeM0/AS1C05_019T04_9000004388cztM0_level2_quad_clean.evt
Size (bytes)996,419,5201,103,690,880
Size950.3 MB 1.0 GB
Events in quadrant A6,201,4587,007,766
Events in quadrant B5,750,3186,789,799
Events in quadrant C5,973,5806,620,292
Events in quadrant D5,230,8705,991,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02143220
B03205730
C02212860
D02650440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01410
B01410
C01410
D01410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020820
B020820
C020820
D020820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10240310271.002900%
B10240330993.026279%
C10240326612.598557%
D10240340823.986211%

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 116417 102399 0 0 0.00% 0.00%
B 116418 102375 0 0 0.00% 0.00%
C 116418 102400 0 0 0.00% 0.00%
D 116418 102337 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 6002 11.5 1615 1525 389.1
A 7 110 4875 8.61 1615 1525 389.1
A 0 30 4755 8.3 1615 1525 389.1
B 2 9 4670 10.75 1523 1454 299.1
B 3 80 3863 8.05 1523 1454 299.1
B 2 8 3846 8.0 1523 1454 299.1
C 12 241 4265 7.07 1579 1486 393.2
C 9 209 3956 6.28 1579 1486 393.2
C 3 126 3950 6.27 1579 1486 393.2
D 15 46 4094 6.89 1497 1366 396.0
D 10 189 3650 5.77 1497 1366 396.0
D 6 67 3616 5.68 1497 1366 396.0

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