ASTROSAT CZTI

Data Quality Report

Orbit 52924

Creation date: 2025-07-17T01:57:16.072656
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_011T06_9000006484_52924cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52924cztM0_level2_quad_clean.evt
Size (bytes)1,027,837,44084,674,880
Size980.2 MB 80.8 MB
Events in quadrant A19,264,81348,997
Events in quadrant B4,094,396764,376
Events in quadrant C6,500,640624,318
Events in quadrant D7,596,347594,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0625490
B0175610
C0246230
D0279110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7636720694.368779%
B7636941.231011%
C763681110.620744%
D763689611.733892%

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 7636 7635 6716 6716 87.95% 87.96%
B 7636 7636 59 59 0.77% 0.77%
C 7636 7636 599 599 7.84% 7.84%
D 7636 7634 757 757 9.91% 9.92%

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 17457914 240810.92 284 277 72.5
A 15 174 317358 4373.82 284 277 72.5
A 0 8 153076 2107.71 284 277 72.5
B 10 191 331543 1939.8 799 771 170.5
B 10 254 144050 840.25 799 771 170.5
B 1 255 79255 460.27 799 771 170.5
C 15 230 1257240 6109.97 754 746 205.6
C 15 224 1026059 4985.81 754 746 205.6
C 13 3 452732 2197.88 754 746 205.6
D 8 176 1796761 8401.11 750 718 213.8
D 8 48 639239 2986.72 750 718 213.8
D 3 12 492771 2301.61 750 718 213.8

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