ASTROSAT CZTI

Data Quality Report

Orbit 20191228_A07_047T09_9000003396_level2

Creation date: 2025-12-07T23:07:39.415326
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/AS1A07_047T09_9000003396cztM0_level2.fits modeM0/AS1A07_047T09_9000003396cztM0_level2_quad_clean.evt
Size (bytes)282,009,600207,457,920
Size268.9 MB 197.8 MB
Events in quadrant A1,769,9861,157,332
Events in quadrant B1,702,5061,177,533
Events in quadrant C1,760,2621,131,248
Events in quadrant D1,490,654997,176

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05380
B05380
C05380
D05380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0548650
B0571520
C0555680
D0713570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A264331750.662051%
B264332971.123596%
C264333731.411115%
D2643311314.278742%

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 32763 26433 0 0 0.00% 0.00%
B 32763 26434 0 0 0.00% 0.00%
C 32763 26433 0 0 0.00% 0.00%
D 32763 26413 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 1616 10.45 461 438 112.7
A 7 110 1423 8.74 461 438 112.7
A 9 19 1293 7.59 461 438 112.7
B 2 9 1317 9.88 452 437 89.0
B 2 8 1144 7.94 452 437 89.0
B 3 80 1121 7.68 452 437 89.0
C 1 80 1311 7.41 464 441 117.5
C 1 81 1311 7.41 464 441 117.5
C 12 241 1213 6.57 464 441 117.5
D 10 189 1089 6.12 427 393 113.8
D 7 3 1059 5.85 427 393 113.8
D 10 113 1051 5.78 427 393 113.8

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