ASTROSAT CZTI

Data Quality Report

Orbit 51000

Creation date: 2025-03-03T13:26:59.709178
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/AS1C07_001T02_9000006452_51000cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51000cztM0_level2_quad_clean.evt
Size (bytes)334,641,60060,405,120
Size319.1 MB 57.6 MB
Events in quadrant A3,170,390378,900
Events in quadrant B2,829,578424,886
Events in quadrant C3,422,576365,276
Events in quadrant D2,636,110362,119

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010618
B010415
C010414
D010414

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0132
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149682744
B0137162314
C0162563252
D0128321986

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41823247.747489%
B42232135.043808%
C41462546.126387%
D42761383.227315%

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 6481 4524 264 264 4.07% 5.84%
B 6477 4558 123 123 1.90% 2.70%
C 6479 4501 269 269 4.15% 5.98%
D 6483 4591 117 117 1.80% 2.55%

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 8 43 439239 4025.31 434 423 109.0
A 15 239 371821 3406.87 434 423 109.0
A 3 130 126850 1159.73 434 423 109.0
B 4 170 506306 5329.34 441 427 94.9
B 4 171 123552 1297.1 441 427 94.9
B 4 81 90837 952.45 441 427 94.9
C 9 38 383632 3266.96 422 417 117.3
C 14 245 377847 3217.64 422 417 117.3
C 1 44 164190 1396.19 422 417 117.3
D 8 176 281949 2311.16 434 418 121.8
D 2 153 157293 1287.82 434 418 121.8
D 3 12 106096 867.54 434 418 121.8

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