ASTROSAT CZTI

Data Quality Report

Orbit 54200

Creation date: 2025-10-05T02:07:23.407173
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_004T08_9000006514_54200cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54200cztM0_level2_quad_clean.evt
Size (bytes)590,169,60093,032,640
Size562.8 MB 88.7 MB
Events in quadrant A3,674,089652,891
Events in quadrant B4,071,616702,786
Events in quadrant C6,359,970498,936
Events in quadrant D7,197,869475,856

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161421
B0168861
C0241641
D0264748

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69812253.223034%
B69812513.595473%
C6982146520.982526%
D6981151221.658788%

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 7181 6983 136 136 1.89% 1.95%
B 7181 6983 104 104 1.45% 1.49%
C 7182 6984 1368 1368 19.05% 19.59%
D 7180 6982 1394 1394 19.42% 19.97%

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 345994 1913.55 733 715 180.4
A 5 241 300752 1662.81 733 715 180.4
A 4 3 46051 251.25 733 715 180.4
B 4 171 378833 2443.65 730 707 154.7
B 7 0 196819 1267.38 730 707 154.7
B 15 20 141727 911.35 730 707 154.7
C 15 215 2266120 12935.73 640 632 175.1
C 15 216 980851 5596.96 640 632 175.1
C 13 3 278982 1589.35 640 632 175.1
D 8 176 3538577 19749.87 636 606 179.1
D 3 12 619655 3455.69 636 606 179.1
D 2 172 128418 713.48 636 606 179.1

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