ASTROSAT CZTI

Data Quality Report

Orbit 53437

Creation date: 2025-10-15T19:29:20.807041
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_002T06_9000006496_53437cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53437cztM0_level2_quad_clean.evt
Size (bytes)849,985,92098,352,000
Size810.6 MB 93.8 MB
Events in quadrant A6,578,789675,916
Events in quadrant B6,003,313763,781
Events in quadrant C13,841,392360,119
Events in quadrant D4,455,239652,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247392
B0229613
C0460581
D0185555

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A755690311.950768%
B75556098.060887%
C7555400152.958306%
D75542222.938840%

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 26597 7558 670 670 2.52% 8.86%
B 26596 7557 277 277 1.04% 3.67%
C 26596 7557 3782 3782 14.22% 50.05%
D 26596 7556 150 150 0.56% 1.99%

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 15 174 1954894 9835.86 795 777 198.7
A 3 63 947950 4767.5 795 777 198.7
A 4 249 223631 1121.71 795 777 198.7
B 4 206 804121 4665.78 805 778 172.2
B 4 171 545816 3165.55 805 778 172.2
B 10 254 478387 2773.93 805 778 172.2
C 1 241 7709677 52191.56 539 536 147.7
C 15 224 2628585 17792.12 539 536 147.7
C 15 178 677573 4583.6 539 536 147.7
D 13 153 329514 1421.98 802 765 231.2
D 15 171 204488 881.19 802 765 231.2
D 2 120 160051 688.98 802 765 231.2

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