ASTROSAT CZTI

Data Quality Report

Orbit 53087

Creation date: 2025-07-23T12:21:11.399691
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/AS1C09_011T07_9000006488_53087cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53087cztM0_level2_quad_clean.evt
Size (bytes)2,738,643,840174,758,400
Size2.6 GB 166.7 MB
Events in quadrant A42,656,184210,782
Events in quadrant B20,479,2701,261,827
Events in quadrant C21,859,9621,231,563
Events in quadrant D15,012,5091,360,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01387333
B0730444
C0772083
D0571543

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177761599189.958371%
B17775510628.725738%
C17776406322.856661%
D17776188510.604185%

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 19510 17776 14548 14548 74.57% 81.84%
B 19510 17778 3558 3558 18.24% 20.01%
C 19511 17777 3372 3372 17.28% 18.97%
D 19510 17778 1543 1543 7.91% 8.68%

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 9 191 37332627 161767.47 917 896 230.8
A 3 62 442651 1914.23 917 896 230.8
A 0 8 328237 1418.45 917 896 230.8
B 2 249 12512000 37984.38 1562 1508 329.4
B 0 213 676216 2048.55 1562 1508 329.4
B 4 81 380315 1150.13 1562 1508 329.4
C 15 224 6876341 15654.28 1602 1588 439.2
C 15 157 2140647 4870.78 1602 1588 439.2
C 9 38 1593456 3624.79 1602 1588 439.2
D 12 17 3514604 6969.11 1736 1660 504.1
D 8 208 917055 1815.99 1736 1660 504.1
D 2 153 828417 1640.15 1736 1660 504.1

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