ASTROSAT CZTI

Data Quality Report

Orbit 20220704_A11_097T24_9000005224_level2

Creation date: 2026-01-03T15:30:47.866606
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_097T24_9000005224cztM0_level2.fits modeM0/AS1A11_097T24_9000005224cztM0_level2_quad_clean.evt
Size (bytes)930,435,840889,824,960
Size887.3 MB 848.6 MB
Events in quadrant A5,782,8325,401,999
Events in quadrant B5,475,9425,382,065
Events in quadrant C5,424,2424,912,404
Events in quadrant D4,771,6524,529,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02075570
B02081070
C02369090
D02733270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03470
B03470
C03470
D03470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020020
B020020
C020020
D020020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A980863890.396591%
B980845560.566861%
C9808627042.756764%
D9808536513.722282%

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 132678 98086 0 0 0.00% 0.00%
B 132678 98072 0 0 0.00% 0.00%
C 132678 98037 0 0 0.00% 0.00%
D 132678 98064 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 9 19 4738 8.96 1508 1415 370.9
A 7 110 4684 8.81 1508 1415 370.9
A 0 29 4525 8.39 1508 1415 370.9
B 2 9 4740 11.72 1450 1385 286.3
B 3 80 4240 9.97 1450 1385 286.3
B 2 8 3853 8.62 1450 1385 286.3
C 1 81 4463 8.49 1435 1345 367.3
C 1 80 4382 8.27 1435 1345 367.3
C 3 187 3671 6.33 1435 1345 367.3
D 7 3 3426 6.04 1364 1243 361.5
D 4 160 3421 6.02 1364 1243 361.5
D 10 113 3388 5.93 1364 1243 361.5

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