ASTROSAT CZTI

Data Quality Report

Orbit 50234

Creation date: 2025-01-11T00:10:59.780937
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/AS1C09_003T01_9000006442_50234cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50234cztM0_level2_quad_clean.evt
Size (bytes)1,017,694,08073,342,080
Size970.5 MB 69.9 MB
Events in quadrant A6,402,732573,738
Events in quadrant B3,713,410696,115
Events in quadrant C13,959,137183,677
Events in quadrant D13,074,898295,893

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236561
B0157471
C0460891
D0434901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A675293513.847749%
B67531161.717755%
C6753491572.782467%
D6753354452.480379%

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 7627 6753 774 774 10.15% 11.46%
B 7628 6754 36 36 0.47% 0.53%
C 7628 6754 4119 4119 54.00% 60.99%
D 7628 6754 3650 3650 47.85% 54.04%

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 98 1631976 9695.23 680 659 168.3
A 10 253 588146 3491.55 680 659 168.3
A 11 7 416996 2474.37 680 659 168.3
B 10 28 212803 1412.89 711 687 150.1
B 4 216 81914 541.05 711 687 150.1
B 0 245 75855 500.69 711 687 150.1
C 4 111 7142178 65311.68 382 378 109.3
C 15 197 1439779 13163.3 382 378 109.3
C 15 213 676008 6178.63 382 378 109.3
D 7 61 6222823 43361.92 504 485 143.5
D 15 108 1087840 7577.51 504 485 143.5
D 2 165 934281 6507.39 504 485 143.5

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