ASTROSAT CZTI

Data Quality Report

Orbit 57208

Creation date: 2026-04-29T21:07:56.619757
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_070T08_9000006568_57208cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57208cztM0_level2_quad_clean.evt
Size (bytes)753,572,16089,812,800
Size718.7 MB 85.7 MB
Events in quadrant A3,633,669669,264
Events in quadrant B3,955,702701,534
Events in quadrant C8,035,199524,818
Events in quadrant D11,706,104317,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163271
B0170051
C0289521
D0398931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72662753.784751%
B72674416.068529%
C7266168223.148913%
D7266359249.435728%

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 7321 7267 69 69 0.94% 0.95%
B 7322 7268 115 115 1.57% 1.58%
C 7321 7267 1251 1251 17.09% 17.21%
D 7321 7267 3072 3072 41.96% 42.27%

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 3 95 540722 2792.7 784 763 193.3
A 4 249 22415 111.99 784 763 193.3
A 4 3 12621 61.33 784 763 193.3
B 5 185 527039 3220.2 761 730 163.4
B 10 247 113373 689.2 761 730 163.4
B 0 213 87351 529.98 761 730 163.4
C 15 224 4924903 26238.41 696 690 187.7
C 12 254 222605 1182.46 696 690 187.7
C 12 252 75029 396.11 696 690 187.7
D 12 33 9156599 64035.98 512 486 143.0
D 2 31 165800 1156.17 512 486 143.0
D 8 240 127904 891.13 512 486 143.0

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