ASTROSAT CZTI

Data Quality Report

Orbit 59049

Creation date: 2026-08-28T02:30:31.886070
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_59049cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59049cztM0_level2_quad_clean.evt
Size (bytes)895,086,72075,041,280
Size853.6 MB 71.6 MB
Events in quadrant A3,136,531650,946
Events in quadrant B3,390,309688,716
Events in quadrant C11,649,891367,577
Events in quadrant D14,461,911119,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137882
B0145232
C0390172
D0473342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6387630.986379%
B63871352.113668%
C6387296646.438077%
D6387521281.603257%

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 7572 6388 25 25 0.33% 0.39%
B 7572 6388 56 56 0.74% 0.88%
C 7572 6388 2842 2842 37.53% 44.49%
D 7571 6386 4702 4702 62.11% 73.63%

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 97394 554.93 712 696 174.3
A 14 238 86454 492.14 712 696 174.3
A 10 251 73207 416.12 712 696 174.3
B 4 236 219073 1456.92 705 680 149.9
B 5 236 127728 847.55 705 680 149.9
B 10 45 38936 255.21 705 680 149.9
C 15 219 8846501 54288.0 586 581 162.9
C 12 252 272731 1670.2 586 581 162.9
C 6 223 97225 593.11 586 581 162.9
D 12 1 12385905 165463.96 259 246 74.9
D 6 239 723173 9657.81 259 246 74.9
D 7 238 131724 1756.46 259 246 74.9

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