ASTROSAT CZTI

Data Quality Report

Orbit 20220122_A11_047T03_9000004880_level2

Creation date: 2025-12-31T12:44:34.726174
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/AS1A11_047T03_9000004880cztM0_level2.fits modeM0/AS1A11_047T03_9000004880cztM0_level2_quad_clean.evt
Size (bytes)328,916,160291,421,440
Size313.7 MB 277.9 MB
Events in quadrant A2,114,8481,858,941
Events in quadrant B1,648,6181,168,819
Events in quadrant C1,965,4941,705,639
Events in quadrant D1,732,9461,600,371

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07400
B07400
C07400
D07400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0732360
B01869040
C01155810
D01090410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36263390.107548%
B362631578843.537490%
C3626328587.881312%
D3626313233.648347%

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 49643 36263 0 0 0.00% 0.00%
B 49643 36251 0 0 0.00% 0.00%
C 49643 36239 0 0 0.00% 0.00%
D 49643 36250 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 7 110 1692 8.53 550 515 138.0
A 9 19 1690 8.52 550 515 138.0
A 0 29 1682 8.46 550 515 138.0
B 2 9 1425 11.73 436 416 86.0
B 3 80 1256 9.77 436 416 86.0
B 2 8 1181 8.89 436 416 86.0
C 1 81 1638 8.54 520 485 135.0
C 1 80 1622 8.42 520 485 135.0
C 3 158 1345 6.37 520 485 135.0
D 3 14 1291 6.26 496 451 134.1
D 4 160 1287 6.23 496 451 134.1
D 10 113 1268 6.09 496 451 134.1

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