ASTROSAT CZTI

Data Quality Report

Orbit 36653

Creation date: 2024-06-27T21:29:48.278429
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/AS1A11_049T05_9000005232_36653cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36653cztM0_level2_quad_clean.evt
Size (bytes)379,416,96080,372,160
Size361.8 MB 76.6 MB
Events in quadrant A2,653,010532,010
Events in quadrant B2,587,886537,257
Events in quadrant C3,017,103524,861
Events in quadrant D2,902,604499,225

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106213
B0104262
C0118152
D0115372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4849100.206228%
B4849130.268097%
C48491483.052176%
D4849641.319860%

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 7003 4850 0 0 0.00% 0.00%
B 7003 4850 2 2 0.03% 0.04%
C 7003 4850 97 97 1.39% 2.00%
D 7003 4850 48 48 0.69% 0.99%

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 10 83 195036 1557.28 628 618 124.8
A 13 6 12666 96.5 628 618 124.8
A 9 143 9381 70.19 628 618 124.8
B 5 255 59918 511.02 618 603 116.1
B 0 221 39184 332.39 618 603 116.1
B 0 199 31110 262.83 618 603 116.1
C 0 10 258128 1859.1 598 604 138.5
C 15 214 212272 1528.06 598 604 138.5
C 14 254 210967 1518.64 598 604 138.5
D 2 153 139945 946.62 607 592 147.2
D 12 6 133005 899.48 607 592 147.2
D 13 171 93768 632.94 607 592 147.2

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