ASTROSAT CZTI

Data Quality Report

Orbit 52278

Creation date: 2025-07-21T23:04:54.307302
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_011T05_9000006474_52278cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52278cztM0_level2_quad_clean.evt
Size (bytes)721,154,88071,066,880
Size687.7 MB 67.8 MB
Events in quadrant A3,085,427568,135
Events in quadrant B5,183,794592,681
Events in quadrant C12,759,72972,191
Events in quadrant D5,202,978501,779

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134351
B0195621
C0419656
D0196561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59581552.601544%
B59593616.058063%
C5958528588.704263%
D59582714.548506%

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 7028 5959 78 78 1.11% 1.31%
B 7029 5960 173 173 2.46% 2.90%
C 7027 5957 4199 4199 59.76% 70.49%
D 7028 5959 205 205 2.92% 3.44%

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 4 249 342845 2176.92 624 607 157.2
A 5 240 78483 495.36 624 607 157.2
A 10 253 50794 319.23 624 607 157.2
B 7 0 1190482 9252.09 610 590 128.6
B 10 254 546537 4245.05 610 590 128.6
B 4 171 280619 2177.39 610 590 128.6
C 15 158 5492851 74959.86 259 256 73.3
C 15 178 3871736 52835.79 259 256 73.3
C 15 224 1216045 16592.41 259 256 73.3
D 15 93 1453284 8621.94 593 565 168.5
D 8 176 428544 2540.07 593 565 168.5
D 2 120 205122 1214.05 593 565 168.5

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