ASTROSAT CZTI

Data Quality Report

Orbit 59126

Creation date: 2026-09-01T11:32:27.950257
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/AS1A14_004T02_9000006600_59126cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59126cztM0_level2_quad_clean.evt
Size (bytes)810,342,72086,587,200
Size772.8 MB 82.6 MB
Events in quadrant A3,720,609679,958
Events in quadrant B3,595,749720,434
Events in quadrant C5,012,579651,615
Events in quadrant D17,109,34469,786

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161222
B0157162
C0198962
D0556492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71791301.810837%
B71782383.315687%
C71781922.674840%
D7178641489.356367%

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 7664 7180 9 9 0.12% 0.13%
B 7663 7179 43 43 0.56% 0.60%
C 7663 7179 77 77 1.00% 1.07%
D 7662 7177 5856 5856 76.43% 81.59%

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 3 14 441503 2250.56 797 774 195.8
A 10 251 107365 544.3 797 774 195.8
A 4 3 30664 152.63 797 774 195.8
B 4 236 227666 1343.47 788 759 168.9
B 0 216 61236 358.07 788 759 168.9
B 5 185 33734 195.24 788 759 168.9
C 3 233 1412730 6664.76 775 768 211.9
C 6 223 166407 781.85 775 768 211.9
C 12 252 137051 643.29 775 768 211.9
D 12 1 14995183 232150.52 221 211 64.6
D 12 110 1032893 15987.87 221 211 64.6
D 11 129 109301 1688.92 221 211 64.6

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

TCT plots

Parameter TCT0 TCT_healed
Tct