ASTROSAT CZTI

Data Quality Report

Orbit 59056

Creation date: 2026-08-28T04:51:36.486150
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_59056cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59056cztM0_level2_quad_clean.evt
Size (bytes)1,030,893,12068,546,880
Size983.1 MB 65.4 MB
Events in quadrant A3,886,927685,870
Events in quadrant B4,241,986704,547
Events in quadrant C13,247,850184,449
Events in quadrant D16,231,6525,305

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164730
B0175380
C0442350
D0530583

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71111912.685979%
B71124165.849269%
C7112515872.525309%
D7111706499.339052%

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 7111 7111 137 137 1.93% 1.93%
B 7112 7112 193 193 2.71% 2.71%
C 7112 7112 3542 3542 49.80% 49.80%
D 7110 7110 5307 5307 74.64% 74.64%

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 10 251 365032 1841.05 800 779 197.9
A 15 233 180522 908.48 800 779 197.9
A 14 238 125311 629.42 800 779 197.9
B 2 249 560699 3357.71 776 747 166.8
B 4 236 243480 1455.53 776 747 166.8
B 0 186 64079 379.77 776 747 166.8
C 15 198 8391431 85568.0 353 351 98.1
C 15 219 2058937 20992.42 353 351 98.1
C 14 254 726424 7404.13 353 351 98.1
D 12 1 15582357 528608.6 98 94 29.5
D 6 239 98072 3323.78 98 94 29.5
D 2 252 78988 2676.38 98 94 29.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct