ASTROSAT CZTI

Data Quality Report

Orbit 56123

Creation date: 2026-02-12T11:22:00.078007
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_083T03_9000006548_56123cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56123cztM0_level2_quad_clean.evt
Size (bytes)1,280,090,880266,650,560
Size1.2 GB 254.3 MB
Events in quadrant A11,924,3691,700,544
Events in quadrant B10,350,9521,889,283
Events in quadrant C11,664,8021,632,609
Events in quadrant D11,931,6761,504,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0499014
B0443224
C0485174
D0501604

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1954110185.209559%
B195415142.630367%
C195418044.114426%
D195419795.009979%

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 20721 19544 604 604 2.91% 3.09%
B 20721 19543 96 96 0.46% 0.49%
C 20721 19544 296 296 1.43% 1.51%
D 20721 19544 660 660 3.19% 3.38%

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 7 64 1516734 2997.93 2053 2000 505.3
A 12 115 1326625 2621.67 2053 2000 505.3
A 15 32 859512 1697.17 2053 2000 505.3
B 9 254 622962 1399.6 2076 2000 443.7
B 4 171 442363 992.54 2076 2000 443.7
B 4 156 400565 898.33 2076 2000 443.7
C 9 38 1302114 2386.44 2021 2003 544.8
C 15 148 726233 1329.37 2021 2003 544.8
C 12 254 432996 791.12 2021 2003 544.8
D 8 240 1725349 3092.1 1998 1911 557.4
D 2 120 996263 1784.01 1998 1911 557.4
D 2 249 766428 1371.66 1998 1911 557.4

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